Originally Posted by visitordesign
and the craftsmanship of the frame leaves a lot to be desired if yr tall and plan on taking any rides with even moderate climbs.
WTF does this mean?
Isn't this a bike fit and frame geometry issue?
Oh, and BTW, your Jackson will have those "blowholes". Every frame does.
To the original poster and others:
EDIT: These bikes are what they are. Entry level fixed gear bicycles. Sure, some stuff will wear out. it happens with every bike. They aren't top of the line racing machines. Every bike you mention is a good first foray into the fixed gear world, although some are [IRO/rush hour] slightly better.
BE SURE that your bike fits you. If your bike doesn't fit you, it will be uncomfortable and terrible to ride.