I am looking for a 48-hole hub on which to build a super sturdy wheel for my heavy commuter/errand/urban street bike. This will be a 700c, not BMX, but I figure a good quality BMX hub should be about the toughest thing out there. I would prefer a fixed/free flip/flop, but a one-sided fixed gear hub would be great, too. Several BMX brands - Crupi, Odyssey, etc. - offer 48-hole flip/flops, but I can't find info anywhere that states whether any are fixed/free or if they are all free/free. If anyone knows or knows where I can find out I would appreciate it. Any comments on brand quality?