I thought I saw something once in the FAQ section, but don't see anything now. I recently acquired a pretty well set up bike, but with a blown fork and cracked frame. I've decided to buy a new frame and fork and transfer all the parts onto it.

I know I want a hard-tail frame, and a fork with ~80-100mm of travel. I plan to do single-track and some drops, but probably nothing more than ~5'. I'm not sure if that falls into XC stuff, trail bike, or AM? Feel free to give suggestions/examples of specific frames/forks - Looking to spend $3-400 for frame+fork. I'm ~5'7", have a 31" inseam, and weigh ~150lbs if it makes any difference.

EDIT: Or if you could even suggest a good place to start reading up more on the differences in things. I'm having trouble even knowing where to begin looking with this stuff.