Over 400D I'd like auto iso and perhaps improved AF and spot with RAW capabilities.
"In the 50D, auto-ISO means ISO 400 in manual mode."
"Some people at Canon need a serious flogging."
Does auto iso work in P-mode:
Will the camera set a good iso/Av/T and let you adjust Av/T from that setting?
Do you have one touch 10X zoom to check focus in liveview?
Same as above but actual pixel view in liveview or display? (not possible on 400d)