It's true, Shurons are retro style frames. And some of them are...eccentric to say the least. But the zyl they use is pretty high quality compared to others. An

It's true, Shurons are retro style frames. And some of them are...eccentric to say the least. But the zyl they use is pretty high quality compared to others. And the hinges...I haven't found a brand of frame with tougher hinges. My faves are either the Sidewinder or the Ronsir Zyl (the latter is the original "browline" style frame as worn by Malcolm X).