I've been thinking about getting either an used road bike or a fixie/single speed for college. At first I thought it would be wise to spend a good amount of money around 600 for a solid bike but now I'm thinking that I'd rather pay less just in case somone likes my bike enough to take it. My only issue is weight. I need something light enough to carry up the 5 flights of stairs to my appartment. I'm also in NYC where things are ********ly priced and some people see fit to ask 500$ for a rusted p.o.s. just because they threw a pair of deep v's and matched them to the chain and saddle. Should I just get a vintage roadie that is less likely to get stolen and is cheaper since the hipsters have only begun buying them? Or should I get a lighter, simpler fixie/ss that will cost me more and is theft prone? What should i do?