I'm looking for a mouse with adjustable DPI. I looked at the G500 and the G9 mice but it looks like you have to push the DPI buttons with your index finger. I was hoping to have buttons that I push with my thumb so I can scope in quick and lower my sensitivity right away for a shot, then switch it back when I'm done. Taking my finger off the trigger seems counter intuitive for this, as it would slow me down quite a bit. It sounds like the MadCatz RAT series can do something like this with a thumb switch. Is it a decent mouse, and are there any other options? Am I expecting too much with this adjustable DPI feature?