I'd say go with the regular M-frames. No matter what, they will be over priced, but unless you live in Texas, stay away from LA's. I personally like the Pro-M-frames better, I'm not sure which you're going for. I've bought mine right from a friend w/connections, so I avoid the awefully high prices. But, if you go for folding or non-folding, the M-frames offer the best protection for cycling.