I traded my 20D in for a 40D this week. I've been using (and loving) Lightroom 1.1 as my sole RAW processor. It's been painfully having to use Canon's DPP 3.0 that came with the camera to process my RAW images.
I hope that ACR and LR are updated soon as DPP is horrible to use.
Bud James
North Wales, PA