All I hear is good things. It would be tough getting used to OSX though. Check these out.

Dell Inspiron- User recommendation:
46% Recommend, 54% Don't recommend (from 276 users)


Mac Powerbook- User recommendation:
94% Recommend, 6% Don't recommend (from 191 users)


"If price is no object, the Apple PowerBook G4 can replace just about any Windows notebook or even a desktop PC."