HI there
I've tried a lot of "PC" mice 🙂
For wireless Mice, I would really recommend the Logitech MX700, the main reason is being it comes with a base station where you place the mouse to recharge the batteries, so when you goto bed or step away from the computer just place it there, and never worry about swapping batteries 🙂 The Microsoft wireless has a nice ergonomic shape that I really like but then it has no charging station like the Logitech and not as responsive too. Some reviews mentioned that the rechargable batteries that come with the MX700 are not the best, you get some lithium brand name batteries that will last longer. Without recharging the previous Logitech mice (the version before the MX700) can work for some 2 1/2 - 3 weeks not more with heavy use on a single charge.
But at the moment I'm using the old trusty version of the MS Explorer, not the 3.0 version ;-)
Keyboards do not need batteries to swapped as often as mice, you can on a single charge run for about 3 or more months and the ones I've tried work through doors/walls(as long as its not metal or thick wood) and surley work over 7ft, that's for the Logitech keyboards, have not tried any MS wireless ones.