I value defense as much as offense, so my list looks a lot different than the ones posted here. Here goes:
1 Kobe
2 Duncan
3 KG
4 Pierce
5 Ginobili
6 Billups
7 Sheed
8 Parker
9 Gasol
10 Rip
11 Prince
12 Bowen
13 Odom
14 Rondo
15 Allen
16 Fisher
17 McDyess
18 Perk
19 Rad man
20 Oberto
Bench- to me the only clear standout is the Spurs:
1 Spurs
2 Detroit
3 Lakers
4 Celtics
Aggregate:
Spurs 47
Pistons 51
Celtics 54
Lakers 58
Of course, the superstar factor is not included in this. The Lakers especially, then the Spurs, and then the Celtics, are better than they actually appear because of the difference that superstar players make.