I think several folks here are overvaluing Aldrich - no one wanted him. He hasn't really done anything in this league. With Chandler down, he had 6 weeks opportunity to secure big minutes and didn't. He hasn't looked all that impressive to me at any point in a Knicks uniform. If both were available, I'd have taken Josh Harrelson over him (JH wasn't). This guy is a stiff. If he were more competent he should have been in the game as a defense replacement for Bargnani in Washington.
Chris Dudley would run circles around him.
Asik is a pretty good player - he looked competent on the floor last season over extended run. His numbers were perhaps worth of top-5 status at the center position! I was going to say I remember watching him in the playoffs and wondering why Houston would seek out Howard - but Jerome James kicked some Duncan butt in a playoff series and look what it got him.)