im looking for a used frame and cheap, and they are probably going to be older models. i know that these are bad frames from looking around at this forum and other forums - Echo ES (easy snap) - Older Brisa's I never heard of these frames of being a problem - Zoos - Zebdi - Norco TT I didnt mention Koxx or Coustellier frames because they are too expensive. Something that catches my eye are builds that are 400 or under. I have seen 2 Zebdi builds, 2 Brisa builds, and 2 Echos, and 1 TT that are around that price. Since these offers are rare, i usually want to purchase them, but im hesitant to buy a poor frame. what do you suggest.