A site dedicated to photographic art and editorial works by fabulous photo peeps by the Photography 2 class at Rutgers, The State University of New Jersey.
Stick with image stabilizing! If you only want to shoot on a tripod and with a fast shutter speed then get the first one. The first is ideal for low light situations but then again at 2.8 it's really risky not having IS.
The second one would be ideal if you shoot in places with lots of light. So figure out what you shoot most in. I've heard nothing but good reviews on the second one too!
Thanks so much, that helps a lot!