After years (literally) of trying to determine the best stuff to fill my camera bag, I think i've finally found it. Keep in mind this factors in my style of shooting (mostly wildlife, nature, landscape, travel, rarely portraits), my budget (approx. 3500) and the fact that I already have a Sigma 10-20 that I wouldn't part with for anything, a good tripod and camera bag and all the accessories I need. I've pretty much settled on this combo and I know "perfection" can never be acheived, i'm curious to hear your opinions of it, and what you might change. PS: upgrading from an xti. Canon 50D w/vertical grip (considered the 7d, but don't need video and the extra MP doesn't equal the huge price jump, IMO) Sigma 10-20 EX Canon 100-400L (I love to shoot birds, and 400 is the minimum IMO) Sigma/Tamron/Tokina 100 2.8 Macro (to double as portrait lens...haven't decided on which, but all get good reviews and are economical). Tamron 28-75 as a "walkaround".