Conclusion :

A. The D7000 can be considered to be a top amateur body or somewhere between top amateur & semipro.

B. The new 60D is the replacement model of the semipro 50D but the new 60D it is in a completely different class (not semipro class anymore).

C. D300s is a semipro body. Correct. 60D is a semipro body? WRONG.

D. 7D is a semipro body.. and in numerous reviews it is compared against the older 50D and D300s.

E. 7D is in the league of semipro crop sensor bodies as do the D300s. Their fullframe semipro counterparts would be the 5DmkII and D700.