New 20D user here! Just picked it up used 20D as a complement for my 60D (and for travelling/hazardous environments). This one has a few minor cosmetic blemishes consistent with it age, but otherwise in perfect working order.
I remember borrowing a friend's 20D a few years ago and thinking, compared to my then 400D, it was a much classier beast (and had far better noise control). I do like the 20D's thumb-wheel and joystick better (and the shutter sound is much sweeter than the 60D's dull thud), but it's been a while since I used a camera with a 1.3 inch screen! Also, it doesn't recognise the Canon 15-85mm lens, so I have to adjust the CR2's EXIF data so that DPP will apply lens corrections.
But whatever: takes great pictures.