Kelly Grannell said:
I only know one RebelXT. You maybe seeing RebelXT + kit lens, RebelXT body only, RebelXT + kit lens grey-market, and RebelXT body only grey-market. Those are the options available at B+H.
I personally would go all the way to 30D.
I was faced with the same question recently and went with the XT. Price was certainly a factor but I was perfectly willing to spend the extra $400 for the 20d or even $700 for the 30d. The differences just aren't worth the money to me. In the end I bought a Rebel XT and love it. I really like that it's smaller and lighter than the 20d yet produces images that are just as good as the 20d or 30d.
What it comes down to is, can you take better pictures with a camera that costs half again as much? twice as much? Maybe. How experienced are you. Are you coming from a P&S? Do you have some SLR experience in your past. If you are decrying the lack of spot metering in your old film camera, you probably shouldn't consider the XT, if you cant think of a time you've needed spot meetering or might in the future, I wouldn't rule out the XT.
Kelly Grannell said:
The 20d and 30d have metal bodies. I take care of my cameras so this wasn't a big deal for me. It was a downside in fact because of the extra weight. I personally think the XT is built just as solidly as the 20d or 30d, the big difference is the material the body is made out of.
Kelly Grannell said:
2. more widespread type of battery (BP-511, compatible will all Canon dSLR except RebelXT. Even the original Rebel non-XT uses BP-511)
My powershot takes the BP-511. They are bulkier than the NB-2LH the XT takes. I can carry spare batteries in less space. The travel charger that comes with the XT is really nice and very small as well.
Kelly Grannell said:
3. because of addendum 2, cheaper 3rd party extra battery (buy from Sterlingtek and not from B+H, they are overpriced)
You want cheep batteries, check Ebay, there are tons at 1/10th the OEM price. Most also lack the life and maximum capacity the OEM batteries do. I'll never bother with a non Canon battery again.
Kelly Grannell said:
4. Better AF in backlit situation (if you're taking pics AGAINST lighted background)
I noticed this as well when playing with the 20d and XT.
Kelly Grannell said:
5. Better centre-AF when you're using F/2.8 lens or larger (f/1.8, f/1.4 etc)
This is true
Kelly Grannell said:
6. Far larger LCD (a requirement for me)
The only thing I look at the LCD for is the histogram, formatting CF cards and to change ISO. It took some getting used to coming from a P&S but everything I need is on the LCD and in the viewfinder now.
Kelly Grannell said:
7. Spot metering (great for concert picture)
True, but I'm not there yet so this wasn't a factor for me.
Kelly Grannell said:
8. Slightly cleaner ISO 1600
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I can barely tell them apart.
Kelly Grannell said:
The XT is superior to the 20d in that it can use low cost infrared remotes and that it is smaller and lighter. If a smaller SLR bothers you, add a grip and you'll get better battery life as a bonus.