hmm...looks like you guys have hashed this out over and over but pls help me anyway... I am a commuter with a 40 minute ride, and I ride a fixie with metal toe clips and runners except in winter when I use platforms. I'd like to try clipless cause I think i could get unclipped faster than i can get a tight toe strap shoe pulled out and its time to buy new runners/shoes anyway. The main thing available for least $$ in shoes in Winnipeg seems to be SPD compatible stuff at Mountain equipment coop. So... eggbeaters or spd? My one concern is about float... which one gives you more motion and is that easier on the knees?