Pros: -Great design; does not look or feel like it was cheaply made. I do appreciate the fact that it doesn't follow the normal convention of boxy design like all the other enclosures. Aesthetically pleasing I must say. The individual HDD lights aren't too annoyingly bright.
-The fans are great and keeps my temps within +/-4 degrees Celsius from room temperature even when I was migrating large volumes of data. Stays relatively quiete even at 90%, you do notice a big jump on noise once it is cracked up to 100%.
-Easy to assemble and install the drives. My drives were automatically detected.
-Speed, lastly I was very impressed with the speeds. eSATA speeds were satisfyingly close to the rated 6Gbit/s, mind you my drives were not set in RAID or JBOD. I noticed that USB speeds were great as well, consistently transferring on average ~30-40MB/s with files over 4GB, even peaking at around 80MB/s.

Cons: A bit pricey I think, It would be nice if it were around $10 less.

Other Thoughts: I have three 3TB Seagate drives and one 3TB WD Green drive. Using HD Tune Pro for SMART monitoring.

I am currently using it as my NAS/Media Server/Backup device.

Great piece of hardware, would definitely buy this again if I need another set.