I've had the M324s on my commuter for ~18mo now and IMHO the M324s have the superior platform. I wish that those Winwood Decksters had better reviews. A $30 pair of M520s and a set of those seem like a great idea. You could have the best of both worlds: flatforms for normal shoes and double-sided SPDs for clipless riding.
Good luck, clipless is awesome. The M324s can be installed with either a 15mm pedal wrench or a 6mm hex.
Last edited by thermalattorney; 12-20-13 at 02:59 PM.