A) slim point and shoot
1-Canon S95 or S100
B) All rounder super zoom compact digital cam with manual controls like DSLRs:
1- Panasonic FZ-150
2- Canon SX40 HX
C) Best quality non-DSLR digital cam:
1- Canon Powershot G12
D) Entry level consumer DSLR:
1-Nikon D3100
E) Mid level consumer DSLR:
1- Nikon D5100
2- Canon 60D
3- Canon 600D
However, now we cannot ignore Sony SLT-A65 (hybrid translucent mirror) and Sony NEX-5N (mirror less but not micro four-third) for their own qualities and according to the reviews, both have equal or better image quality as compared to above DSLRs
F) High end consumer DSLR:
1- Pentax K-5
2- Nikon D7000
3- Canon 7D
I ranked Pentax highest due to its extraordinary image quality and recent price drops which brought it back to high end consumers classification from semi-pro.
But at this level, lens combination is more important than the body itself alone.
So, considering the affordability and availability of lenses, my ranking would get reversed 
1- Canon 7D
2- Nikon D7000
3- Pentax K-5
Nobody usually goes higher than this here except VCheng 