The old Huffy which I'd been riding for years is getting quite beaten up. I might be able to repair it, but I want something new. I have a lot of requirements for my perfect bike, but I can't seem to find them in any particular type of bike or brand. I don't know what to look for even. I seem to be leaning towards a cruiser, but there are problems. I want a single speed bike. I want the pedals/gears/brakes and such to function the way my current bike (a cruiser) does: I can coast with the pedals not moving, yet moving the pedals backwards brakes the bike. Nobody seems able to tell me what this is. It isn't a fixie, right? I need to be able to sit up straight. I don't care that this makes me less aerodynamic. I would like thin tires, I guess, which are apparently more efficient or something like that. Cruisers usually have big fat tires. This isn't really necessary I suppose, I've been riding my cruiser around on its big tires and it feels fine. Lastly, I find the curved frames of cruisers to be hideous. They would be great bikes if not for this. I also don't like the big, fat frames that are on BMX bikes. My budget is also pretty spare, $100-$200. I would be interested in knowing about more expensive bikes that fit more closely, though I probably wouldn't be buying them. Feel free to look at me funny for having this weird set of requirements. Great thanks in advance for anything that fits!