you need to find a shop that has stock more than 3 bikes, odds are one of them won't fit you or your budget.
most modern Frames will hold your weight, wheelset may not, so keep that in mind that any bike you select will need a wheel upgrade pending on budget and how many times you want to break spokes on the stock parts.
bikes fits like shoes, some shoe brands wont' work for you, some model won't. More you try out the better. Or you can just get the one you like looks the best. Usually works for me
__________________
Rule #10 // It never gets easier, you just go faster.