All Shimano for me. 5700, 6700, 6800, 7810, 9000. I just like the wide platform of the SPD-SL. The group I ride with seems to be about 60% Shimano, 35% Speed play and a few misc somethings. Clipping in is no big deal since "IF" we pick a good route with a lot of bike path we have a some 10 mile + stretches with no stops.

6800's for $88 is sweet. I got some 9000's from a UK website on sale for a silly low price, like $120 and then got some used 105's for about $20. I don't think I can tell the difference when riding but sometimes you need the bling