hi everyone, just joined having read lots of stuff on here, all very interesting. 44 years old, 6 foot 2, 14 stone. am looking for a bike for leisure/keep fit, perhaps the odd commute. fancying a drop bar and also like the sound of a fixed, by the sounds of it less maintenance involved, not too many hills around leeds either. is it correct you cant freewheel on these( so my legs will be going ten to dozen downhill??) not averse to a geared one either so any advice re double, triple, compact- whatever that means!! would be greatly appreciated. budget 5-600, prob 2nd hand to give me more for my buck. you can see by my stupid questions im not exactly up on current trends or technology so thanks all.