Nilsen wrote:Thanks MrChad - for your comfort - i hope the 24-70 is what u say - thats why i ordered it - and i have been warned that i from now on only will be able too see glass if there is an "
L " in it.

That's not totally true, but you really won't want to spend money on glass that really won't meet the highest standards. You are going to find the L f2.8 as such a bright lens that apertures much lower will really leave you wanting.
Plus the build is so fantastic, that you really begin to not like some of your old plastic lenses. The 24-70L may not be as sharp as other Canon primes but I don't own any old FD primes that can beat it so this lens is fantastic enough for sure all use IMO.
I love my 10-22mm but it's no f2.8L. But I also don't yearn for FF so I may never know the full frame potential of my lenses, my Drebel was so superior to the consumer film I shot in terms of IQ that upgrading to a 5D just doesn't do much for me. I'd rather have an APS-C body with the speed and build of my old Elan 7 with a viewfinder to match, I'm not so sure that's FF exclusive in terms of wants, but now I'm off topic.
I've never used an L f2.8 next to an f4 so I can't really do justice to comparing the two.