I have one I just got in August. Needed it for work primarily since one of our apps
only works with Ctrl+C & Ctrl+V for cut & paste, which we use all the time. So this
mouse has the 2 little extra buttons on it, which are fully programmable. Works nice
and the battery life, so far is good. On my first set of batteries (energizers) and they
are still fine. Only thing I don't like is the power button is hard to use. And for some
reason, my mice keep tending to navigate off the mouse pad or point in the wrong
directions at times. And that happens to me on any mouse pad surface and even with
my MX1000 at home.
FYI: I got it thru Amazon.com for about $35 and at that time
it had a $10 mail in rebate. So for me, an excellent price. You
will find Staples & Office Depot about $10 higher .. Also, free
shipping & no sales tax at Amazon ... got it in about 4 days