Hello. I have been shooting for a year now when I purchased an XTi last may. Since then I have been quite addicted to photography. With the economic stimulus package comming shortly ($600) I have some money to spend on my hobby. I have been reading about the 40D quite a bit lately, and the LCD viewfinder + live view is almost enough for me to buy it, but as you all know, it has better performance at higher ISO, build, etc as well.
I do not have a large assortment of lenses, or many high quality ones. The lenses I have are as follows: Nifty 50 1.8, 28-105 f/4-5.6, Tamron 70-300, Tamron 17-50 2.8. As you can see, my only really higher grade lens is the Tamron 17-50, and I would also like a higher quality lens to get the 70-200+ range.
The lack of a view finder LCD with my XTi has me unable to get shots sometimes due to not being able to see through my eyepiece to compose a shot, and I absolutely LOVE the focus tool they have -- I find it hard to focus manually sometimes.
I'm basically on the fence here between selling my XTi, the tamron 70-300 and the canon 28-105 and picking up a 40D, or selling those other two lenses mentioned, and picking up a sigma 70-200 2.8 with a 1.4x TC.
Right now I shoot mostly landscapes and nature scenes that don't require me to have reach, and just last week I started dabbling in portraits, however, the reason I don't shoot other things (wildlife, sports, etc) is because I don't really have a decent lens for it (not a fan of the tamron 70-300).
So, what it boils down to is the age old question....
Body, or lens? Any input from people who have been in my position?
. The 40D has the same kind of feel as the 5D, in terms of where buttons and dials are placed.
And as a reference, I had a 70-200 F4L non IS. I extrapolated the weight of the 2.8 non IS and thought I could do it... the moral of the story is buy from a place you know has a good return policy, it's worth it.

