Pros: All 4 worked fresh from the bubble-wrap..

Cons: None so far

Overall Review: All 4 have between 20,000 - 30,000 power-on hours. Sounds like a lot, but the power-cycle counts are < 50. Translation: enterprise-installed drives from a large data center.. For comparison, I have a good dozen Hitachi 500GB drives with < 20 power-on cycles and 70,000 + hours (yes, 7+ years continuous power-on) also running fine on various systems in several locations. Truth is, if it came from a well-cared-for data-center environment, and it lights up fine, it might just outlast a new retail-grade drive. YMMV -- I had a new 3TB drive fall over completely in less than 6 months. Two caveats: I do run RAID mirrored pairs and hotspares-- everything dies eventually. And second, as enterprise drives, these run very warm. I would not run mine in a non-fan-cooled sata-to-usb enclosure, or an HTPC with a quiet (aka wimpy) fan, or anywhere without decent airflow. And if not RAIDed, I'd be very diligent about backups. But then not having backups is asking for trouble anyway.

Pros: Very fast when in operation. Good coverage. Plenty of features. Shipped with the latest firmware. Decent price for the features.

Cons: Occasionally has VERY substantial slowdowns in LAN to WAN routing, even seen by wired devices on the LAN, which need a reboot to clear. Also has had very significant WiFi slowdowns which seem to happen at the same time. I may have to start a scheduled reboot to see if that improves the situation. User interface is so-so, missing some options I'd like to have seen. Also, NO WPA-3 in this model, a painful shortfall.

Overall Review: Okay for typical internet users, but I would NOT recommend this for remote workers such as myself if rock-solid reliability is needed. I purchased in part on price, since real professional grade equipment is much more expensive. If a nightly reboot gets rid of the periodic slowdowns, I can live with it for a while. Really wish it had WPA-3 as well. UPDATE 2 months later: Nightly reboots (easy to set up within the router itself) seem to have eliminated any slowdowns. Not at all an optimal solution, but a work-around. Fortunalely for me, any torrents I might do would be on a hard-wired network, or I'd be more upset. If Wavlink ever reads these things -- It would be a huge improvement if I could schedule a WEEKLY reboot instead, but it's nightly or manual.

Pros: None -- see the overall review

Cons: Bad packing and bad warranty right out of the box.

Overall Review: Received 2 brand-new (not OEM) drives, still in manufacturer's sealed boxes. Serial numbers on the bottom of the box. Went to Western Digital's website to verify warranty and SNOT! RATS! One of them is "OUT OF REGION" for the warranty while the other is fine. This IS the fault of WD or the reseller, take your pick. So, I have a Red PRO with a "5 year warranty" that at the moment won't be honored if it fails. I've opened a case with WD and am waiting one more business day before I send them back to NewEgg for refund. Even if they make it good, I doubt I'll buy another WD ever, it's not worth the hassle. As a business owner myself, I have to wonder why WD would ever make such an incomepetent, customer-hostile policy to begin with. I hope for their sake they have a reasonable way to fix this stupid mistake. Oh, and the larger box they came in was packed about the worst I've ever seen disk drives come in. 50% large bubble pack and 50% air with the individual disk boxes rattling around loose. Worst packaging for a tech product I've seen in years, and that's on NewEgg. I suspect that if WD can re-assign the country to honor the warranty, I'll find the disks okay as the WD packages themselves are well-done. Otherwise, they go back, and I'll try to buy some Seagates from another large seller. Really disappointd in you, NewEgg. Been buying from you forever -- check my order history -- and this was the first genuinely terrible moment. But it's been a very ugly experience and demonstrates a total lack of competence on your packaging team and your logistics management. If WD makes it right within the next business day, I'll update my review.

Pros: Solid performer on Ubuntu and Windows.

Cons: No cons so far

Overall Review: Solid performer on Ubuntu and Windows. Bluetooth on Linux is sometimes annoying, but I think that's not the trackball, it's how Bluetooth times out occasionally if I'm only using the keyboard for long periods. But the power switch on the trackball enables me to turn it off and back on, and it reconnects fine.

Pros: I've had several USB3 hubs that disconnect when transferring large amounts of data between disks. Pleased to say this one does not, which is my major need.

Overall Review: The USB sockets are very tough to insert connectors into. Once it, they are perfectly secure. Almost like the case holes are slightly small. This is not a problem for me, since I needed multiple, always-connected USB3 that operated well, but it would probably be annoying if there was a need to constantly connect/disconnect/connect. Otherwise, I'd have given 5 stars rather than 4.

Pros: Plenty of room for a 17+" laptop using a mouse alongside. Sturdy and stable. Comfortable lap cushioning. Great for bigger laptops and people who prefer a real mouse to a touch-pad.

Cons: Not a real con, but understand that this product is hefty. Which actually aids in its stability as a user moves. Spouse went from using a 15" laptop on a lightweight plastic lap desk to a 17+" power-user laptop on this, with a separate mouse, and immediately commented on the weight. But spouse is now used to it, and very happy with it overall.

Overall Review: Well made product that does perfectly what it is intended for.