"No rechargeable is a VERY good thing here"5.0 starson by gerardb63
Pros: Mouse is solid.
Ergonomics very welll thought out (for right handed user. Lefities are out on your own here folks
Cons: Anyone who puts "no rechargeable is a con isn't thinking this one through
Summary: I purchased the MX Performance mouse a few weeks ago. I loved everything about it. Everything, that is, except the battery. Yes, the performance is rechargeable, but I was having to plug the thing in at least once a week or more.
Sure, you can work while it recharges, but if I'd wanted a mouse that I had to plugin all the time, I'd have just purchased a "corded" mouse (because for all intents and purposes, that's what it was)
Logitech has figured out a way for one to get 6+ months out of a pair of alkaline batteries, so I just don't worry about changing or charging all the time. I just plug in a set of alkaline batteries (and really, sure you can use your own rechargeable batteries, but for maybe $1.79 every 6 months, I don't mind not having rechargeable batteries.).
Also, because of the previous iterations of wireless mice and keyboards (those that didn't have long battery life) I went through batteries every few days. So now I have a drawer full of alkalines already anyway.
So don't let this not being rechargeable be a "negative". All in all, after returning the mx performance I thought I was going to be stuck with my older mouse until I saw this baby. Get it, you will NOT be unhappy with your selection.
Otherwise, go buy the MS Performance and have fun plugging it in, and then again, and again. I figure by the time the Performance was 6 months old, the rechargeable component would be useless as I'd probably have to have it plugged in all the freakin' time (rechargeble batteries do degrade in terms of how much charge they can hold. If after a few weeks I needed to charge it every few days, I'm sure that after 6 months or a year or whatever that would be significantly less.
Therefore, if you're only planning on buying for a few months usage, go for the performance. If, on the other hand, you don't want to spend $100 and get a "great mouse for 6 months" definitely get this one. You will not be unhappy with your choice.
This is the one.