But I will always sacrifice some versatility for speed, and primes do that quite nicely.
HAHA! I had to read that 3 times to understand what you meant. "Speed" for me means rapidly getting shots at all kinds of different focal lengths (action sports)--I can't do that very fast with a prime. ;-)
7D, 40D, XTi, 24-105 4.0L, 70-200 2.8 IS L, 85 1.8, 50 1.8, 100 2.8 macro, Tamron 17-50mm f/2.8, and an S100 that is more complicated than any of them.