i am new at buying bikes, but i will need to buy one for college and other stuff. the region where i will be using it has a lot of hills as well. the bike i'm using now is a roadmaster that i found on the side of the road. also, i am about 220-240lbs.
so far i'm looking at:
raleigh mojave 5
trek 4300 disc
and i will probably need:
not 1 speed
budget is around $4-500
I've got the Trek 4300, and I beat the heck out of it regularly on trails, hills, and more serious mountain biking. I love it, and certainly recommend it. I would say, however, that you could save yourself some money by just getting the regular v-brake model. Disc brakes are probably overkill unless you're really hurtling down super technical mountain trails. As a point of reference, I'm 6'2", 210 lbs and the 19.5" 4300 fits me beautifully.
I have a Mojave 8.0 and I love it. I beat the crap out of it so far and I have had no problems at all. I was 5'10 295 when I started riding it in Feb. I am now 257 and its still problem free after 1500 miles. The 5.0 is very similar, the main difference is the lockout front shock which is nice. I ride my wife's Trek 3700 when the weather is really crappy and I like that too. You can't really go wrong with either. Just compare the components and pick the one that suits you better.