as my first L lense?
the reason i would purchase the 24-70 is because my current tammy 28-80 f3.5-5.6 is somewhat beastly. It is a bit dirty, and just feels weak. When it gets hot it seems to not work so well, which is quite annoying. What i mean by this is that the image seems to soften up. The AF is slow. I think its clear that i need something else. I would also just like to have a lens that is a straight up improvement; thus, my choice for considering the 24-70/
On the other hand, i would use the 300 for surfing or other sports, maybe some birds or wildlife on my xti...
not sure which one i should save my $ for. I have plenty of time to save for it, and I will eventually drag my sorry self to the OPT (Oceanside Photo and Telescope) to try out both.
Your advice is appreciated,