I'm looking at the 7D seriously also, but I'm waiting for the second generation to see if there are any bugs they need to clear out of it first. I've heard a few reports of image ghosting, but that Canon is looking into it. In the meantime, it gives me a little more time to save
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As for the Tamron 28-75 f/2.8, I bought this lens to upgrade from my original kit lens. I saw a definite difference between the kit lens and the Tamron and the 2.8 really opened up a lot more possibilities. I also have the Canon 17-55 f/2.8 IS. Definitely sharper than the Tamron, but also way more expensive. Never having personally used the 28-135, I can't speak to it's abilities, but I'm sure the IS is a nice addition. For me, if I had to choose between IS and 2.8, I'd find the 2.8 more useful. BTW, I still use my Tamron quite a bit. It's great on vacations when I want to travel light. Here are some shots using my
Tamron.
I sympathize. Sometimes it's hard to look at your budget and your wants and needs and make a decision. Sometimes I think that by the time I get everything on my wish list, I'll be too old to use them
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