QUOTE (Sheldon N @ Nov 30 2007, 11:08 PM)
Not in my experience. I owned a 17-40L that was better than two different 24mm non-L primes I owned. My 24-105L is even better than the 17-40L was.
Zooms have gotten really good.
If you want the best possible quality than you can't buy Canon glass. I had a 24L 1.4 and sold it again, because the difference to my 24-105 (which is extremly good) wasn't enough.