Yeah, I don't know if I anything really compares to your RAT/Transformer, you must get some sort of power bonus just by channeling through that. I doubt anything will beat the high tech beast you've been using, but I can't complain with the Logitech Nano's endurance. Going on 5 years, it responds just as good as it always has, being no worse for wear. Because of it's size, you wouldn't hold it in the cup of your hand like you would other mouses, and because of my long fingers I tend to play with it at the tips which can be a little weird for some people (that i've noticed). If I'm ever in the market to look for an upgrade, I know what I'll be saving up for.