Why are some people treating Spot Metering as if it's the Second Coming?! It is just one of the 4 metering method that can be used for exposure. You DO NOT use spot metering for everything do you? 
I voted 30d but only if you can swing the extra cash.
If you used the large 2.5" 230,000 pixel screen it is tough to view the 1.8" 118,000 pixel screen of the 20d. I also enjoy the 1/3 stop for ISO, quieter shutter, fast burst (at a constant) and some other minor updates.
20D


