One stopper flaw

First, let me say that I've used and like many Logitech products. I use their cordless trackman and MX610 and LX7.

I ordered this because while the LX7 does amazingly well for an LED mouse on plain surfaces, it's not quite up to laser sensors for very small movements when doing graphics work. I hoped that the LX8 was a step-up from the LX7.

It's not, in a couple of ways that aren't its fault: It's much lighter than the LX7 and lacks its pleasant degree of heft. It's wider, but that's not a fault.

The big problem is that the side buttons are easy to touch by mistake, and their resistance is so incredibly minimal that the only way I could have used this mouse would have been to disable those 2 buttons, and I don't like losing buttons on a mouse.

I thought it might just be my unit, but someone else had the same problem.

Forward button placement awkward

This mouse has a nice feel and extremely precise movement tracking. The only complaint I have is the forward button on the right. It's a little hard to press and sometimes I press it accidentally. I suppose I will get used to it with more usage though.

Also, if the mouse's receiver isn't close enough to the mouse, some buttons will work intermittently.

All buttons work correctly out of the box with my Gentoo Linux system. Just set the number of buttons to 9 in xorg.conf:
Option "Buttons" "9"

Quality mouse, worth every penny

I've had this mouse for a while now and I can safely say that I am absolutely content with it.

Pro's:
-Laser tracking system: no jerky movement, tracks on damn near everything
-Good weight: light enough to be moved without much effort, but heavy enough that it doesn't feel like you'll be shooting it into your wall during heavy activity
-amazing battery life: bought this a few months ago, it's been "on" since I put in the batteries and haven't had to change them yet
-amount of buttons: has a forward/back button, tilt-wheel and the two standard buttons. if you're a gamer, you'll appreciate every button.
-rubber grips on the sides: believe it or not, but I've stopped getting sweaty palms during all-night gaming sessions since buying this mouse.

Cons:
-might be too light for some
-usb receiver cannot hide-away in the mouse like some mice
-metallic blue color (more of a personal con, i would have preferred silver or grey)
-it's not free ;)

final thought: Love this mouse, fits my needs pe  more