I rode my bike almost religiously as a kid, but before high school we moved to a really hilly area, so I stopped riding then. Now I'm in my second year in college and after having my bike stolen last year I'm attempting to get back into riding instead of driving. I'm in L.A. so it should be easy and fun to use the metro and my bike to get around. I do have a question though, I can either use my brother's old bike (about 7-10 years old) which I'm 99% sure was from target or walmart or something, or I can buy an old used Trek (I think there was also a Specialized, but I don't remember for sure) from a local bike shop for 100 bucks. I'm trying to stay away from spending too much money before I'm positive that I will actually use the bike alot (my campus and the surrounding area is also quite hilly). Would you recommend just spending the 100 and giving it a go or trying to stick with the low quality bike for awhile?
Also, I bought an OnGuard Bulldog mini U-Lock for my bike, does anyone know if that kind is any good?