I'm a big of a bag nut, which means I've never really found a bag that works for me. The best so far has been the Topeak Dynapack, but there's a big drawback: I keep leaving it open, hit a small bump, and everything goes AWOL. bleh
So I'm wondering if anyone has a good source for custom bags. Though I'm not an expert, I'm ready to knock up something of my own design. Any ideas?