Pros: sturdy build, very long battery life, free-scroll for long documents and websites, no unsightly and useless frills.

Cons: theres significant lag when waking the mouse up when it isn't moved for a few seconds. i can imagine that this isn't a mouse for gamers. it sometimes gets a little annoying even for me when i'm just browsing the net.

Other Thoughts: wish there was a way to prevent the mouse from going into its laggy standby mode so quickly. i tried but couldn't find a way. wouldn't mind less battery life for this.

Pros: Great wireless mouse for the money. It's small, but has a very solid feel to it. I've dropped it a few times and it still holds well. I've had it for 7 months and have not had to replace the battery. The hyperscroll wheel is excellent and so is the third button. Great accuracy and the dock is pretty cool even though I don't use it. They even give you a great wrench to safely remove the dock.

Cons: Not a Con, but if you're into a contoured mouse you probably won't like this. It's a good ambidextrous design though.

Other Thoughts: It's a $60 mouse that I got on sale for like $20 on black friday, and it's a steal. It's worth its full price though.

Pros: -Excellent shape
-Interesting scroll wheel
-SMALL reciever
-EXCELLENT battery life

Cons: -It might be a bit hard to get used to, but once you get the hang of using the button below the scroll wheel as the middle click, it's not so bad.

Other Thoughts: I bought this mouse technically when it first came out. I was a little skeptical but so far, it's the best mouse I've ever owned. The battery life is insane and is much better than the Microsoft ones (The ones that cost around 20 bucks). The shape is interesting, but it does fit for either hand, so no worries here.

Since I use my mouse quite a bit (around 4-7 hours sometimes a day), I know it won't last 18 months like it says on the box. As of now, it lasts around 7 months of "Heavy" use. This is much better than I expected and it feels like I don't have to worry about batteries (almost feels like a wired mouse with having no worries about batteries).

I don't quite remember the date of my purchase, but I know it was in the fall of 2008 and it's still going good. It has a few scratches and stuff here and there, but I will use this mouse until it dies on me for good.

You have done well Logitech. I would definitely recommend this mouse to anyone (my bro got one too!).

Pros: Great mouse. No problems at all.

Cons: none

Pros: Works quick, small USB adabter, great battery life

Cons: None so far

Other Thoughts: Got this for my wife's netbook so we did not have to keep unplugging the USB. Going to buy one for our daughters netbook

Pros: I am using this mouse since last couple of months.
works great! very happy with the purchase.

Cons: none.

Pros: 1) Very responsive to clicks and movement
2) USB doesn't stick out much
3) Battery lifes is good so far over a month now

Cons: 1) Scroll Wheel works ok except it has an annoying way of adding an extra scroll sometimes if the mouse is moved causing a missed click of a link or location.

2) LOGITECT claims my UPC code was missing from my rebate information.

Other Thoughts: I do not play around with screwing up rebates everyone and I know all of the things they required were in the envelope sealed with tape so nothing would fall out! btw My wife couldn't believe they are claiming the UPC was not in it because she watched and double checked everything for me.

Logitech lost a long time customer over a $xx rebate! It's just principle!

Pros: good! really good

Cons: nothing

Pros: 1) Excellent tracking on most surfaces.
2) Unnoticeable lag unlike most wireless mice.
3) Hyperscroll wheel is really fun to use.

Cons: Only a few minor things that don't really matter:
1) Doesn't track on glass.
2) When you pick up the mouse the hyperscroll wheel moves about which is annoying when you lose your spot in a document.

Other Thoughts: The notebook sticky mouse dock is kind of useless, but that's just my opinion.

Pros: Extra-long battery life. Versatile button-function programming. Not too big, not too small. Good for portable or desktop use.

Cons: None.