Comrades, I need a mouse for mainly Photoshopping. I may get a tablet sometime soon but but I can wait until my birthday. I've always hated my current mouse, Logitech RX1000 simply because of its curved shape which is common to most mice.
I use a Rollermouse Pro - expensive but great to use particularly for photo and video editing. Was originally designed for RSI sufferers - eliminates side to side hand movements from keyboard to mouse and back.