Well czar, zoo, echo, GU and adamant (I probably missed one, i usually do) are all made by the same guy (referd to as 'Deng frames') so really all those frame are pretty much the same build quality weight etc. (Although they do have the new light weight range out now.) So they're all just as good as eachother really. Deng frames are known to be strong, long, reasonably priced but a little weighty.