PG: Steve Nash- hard to pick among PG, but Steve Nash's freakish passing ability makes him a very unique PG and powerful field general.
SG: Kobe Bryant- no brainer, best shooting player in the game, top 2 offensive game with Lebron
SF: Lebron James- another no brainer, freakish talents, best all-around offensive player
PF: Tim Duncan- Old and still a powerhouse. Best all-around PF offensively and defensively
C: Dwight Howard- only real way to beat this guy is to force him to shoot free throws or mob him.
Honorable Mentions:
PG: Chris Paul- one of your do-it all PG, would argubly be #1 but Nash's passing ability is too unique.
Jason Kidd- In his prime, he would be the best PG.
SG: Dwyane Wade- Elite talent and top 3 in combining talent with athleticism.
Brandon Roy- Has one of the best intangibles in the game.
SF: Carmelo Anthony- Real good offense game with only offensive downfall is his ability to hit more 3s and decision-making, hard to beat 1on1.
Kevin Durant- Potential Top 3-5 offensive game, but needs to work on decision making.
PF: Kevin Garnett- Another all-around PF, a little better D than Timmy but has less intangibles than Tim Duncan (other than energy).
Dirk Nowitizki- Elite PF offensive game who can beat you on the post, mid-range, long-rage.
C: Yao Ming- Top 2 Center today and could arguably be #1 if not for his damn durability and stamina.
Pau Gasol- I would give Shaq the nod here as Pau Gasol isn't really a true center, but Pau Gasol plays the position well offensively and defensively. Has good passing ability for a center and his hook is deadly.
There's my list, cya