Never heard back from the World Sport seller (and the bike is still out there for sale but whatever), so I got the 564. It's lighter than I thought, especially once I took those pedals off! And it also has index shifting so that was a surprise. I was expecting the old friction shift. It is a 25" frame, and I ride a 58cm so it's a little big, but after a quick ride it doesn't feel too big for me. It's going to one fun replacing cables, chain and stuff like that. I enjoyed my short ride on it, but the suede saddle wasn't as comfortable as I thought it would be. Here's a pic...
