Hey guys, I currently have the gear below. I shoot a lot of sports, so I would like a camera that has a better AF system and a higher burst rate. I was thinking of a used 20D. The metal body would be a plus. Does this sound smart: Sell the XT body, vertical battery grip, 50mm f/1.8 (never use it) and the 28-105 f/3.5-4.5 (all in like-new condition).... ...and get a used 20D body and either a Sigma 28-70 f/2.8 or a Canon 28-135 f/3.5-5.6 IS? Sound like a plan? If so, which lens should I get? I really like the IS and the little bit of extra focal length, but a 2.8 would be nice glass to have. This would just be a walkaround lens (walkaround=dimly lit school, outside shooting scenes for quality). We will also be doing a lot of boating in the summer, and it gets rough, so I need either a hugh shutter speed or IS. Any other advice or input would be greatly appreciated in this stressful lol transition in my life. Thanks!