I know we have some bicycling enthusiasts here. I am hoping someone can help me out. My wife wants to buy a new bike. Her wants: wide tires; hand brake; fixed gear; relatively cheap (<$300). Mostly paved bike paths or very light trails. Nothing heavy duty. She has an old 10-speed Schwinn, that I suppose is a road bike, but she rode a fixed gear bike on vacation recently and really enjoyed it. Of course she can't recall the brand. Any good bikes that fit that bill? I know next to nothing, and I'm not looking to research bikes like I would a camera (obsessively), so any input will be greatly appreciated. Thanks!