What are some good options? Been playing on a touch screen so far...
I've had 5-6 different mouses in the past few years, all hand-me-downs. I find that adjusting the mouse speed in settings can make any mouse serviceable-- I had one that was tiny which was all right, and currently my mouse is normal sized. My mousepad is completely standard. It's the type with a drawing that you can request on it.
Despite all of this I almost never blame my mouse for my failures in bullet. It's usually my brain being just a tad too slow sometimes.