2005. by far.
most versatile line up Spurs ever had. they could slow it down (Piston series) and they could run (Suns series).
Tim still a dominant double team magnet.
Manu was at a career best.
Bowen was the best perimeter defender in the league.
Rob delivered one last big PO run and played good defense.
Tony was far better than given credit. he struggled in the finals against Billups, but he wasn't the only one who was dominated by him in that season. (Billups was likely the best defending PG in that season).
Barry was one of the best outside shooters in the league.
1999
2003
2007 (I think the 2004 and 2006 team was far better than the 2007 team. less lucky, obviously)