I know another one of those threads.. But well, I want to possibly downgrade the amount of lenses and/or upgrade, but not sure if it's worth the hassle of selling and adding $$'s if the difference is just minor. Right now I'm shooting pretty much anything, lots of assignments for school so every lens gets some use..
So far what I have is:
>Sigma 50 - love this focal length, possibly wanting to upgrade to 50L
>85 1.8 - thinking of getting the Siggy, not sure if it's worth it though, not interested in the L for this one (right now anyway)
>24-105 - it's sharp and I like it, stays
>Sigma 70-200 2.8 - barely used, maybe once a month (still pissed I paid 1800 at a local store for this)
>100L - love it, definitely stays
> 28-135 - eh, stays on the Rebel, don't care if it stays or goes.
Help me consolidate, or tell me to shut up! 

When I'm not doing assignments for school, I'm only using my primes (50, 85, 100), so 35 isn't too far off from my favorite length, 50. 
