IMO the top NBA teams right now (in no order) - Spurs, Lakers, Pistons--- right after that would be Mavs, Suns, Celtics. Houston lost Yao, so they're out. Other teams that could compete- Utah, Cleveland, and maybe New Orleans.
Lakers certainly look good in recent games. But is Gasol really tough enough to bang away with other teams big men in the playoffs? Also, they do not have a great point guard. The Spurs match up well with Lakers. Bowen, Udoka, Finley and Ginobili can all defend Kobe. Duncan dominates Gasol, and Oberto has had success defending Bynum.
One thing about the Lakers that you can't say about some teams, they do have a coach who can lead a team to a chmpionship. Not so sure about D'Antoni.