OK....so I think i'm finally going to take the plunge and buy some shoes/pedals for clipless riding. As always I like to stop by the forum for advice. I am currently riding a Steamroller w/ MKS GR9 pedals and typically wear my chucks for the flat sole. I have a short (33 mile) ride coming up and figured that shoes/pedals would be the way to go and may be a bit easier on my feet. I'm worried about the breaking since I can normally lock out the back tire fine w/ my MKS but would i become unclipped by forcing the pedals backwards like that?

Second part of my question is on pedal types... Speedplay, Look, SPDs, Crankbros?..any suggestions from those who have street ridden theirs (fixed) is welcome.

Thanks !