I got the last generation of MX Mice. If the new one is even exactly the same, it is worth the money.
I got the MX 1000 Laser Mouse a while ago and I have to say that it has changed my opinion of Logitec entirely. I have had nothing but good luck with it. It is energy efficient even though it has a recharging lithium core. The signal is stronger than any cordless device I have seen.
I can't even survive without the back and forward buttons coupled with the handy program swap button. (Similar to Alt+Tab for those who don't have one.) The bundled software is decent as well for editing it. You can even make different button profiles; Example: Have it set up to be a music remote while working on a paper for class or even hosting a small get together; Disable all buttons except for left and right to do a PP presentation.
The scroll wheel is adjustable and has scroll buttons for more controlled scrolling.