Apple is offering me a replacement for my Powerbook, which is running into some problems with the RAM, and even after many repairs, it's still acting odd. Are the screens on the new MBP's (post lawsuit issuance) still sub-par, with dithering? Is it worse or better than my current aluminum G4? How does Sheepshaver run, is the speed decent? I'm a nostalgist and have tons of older software for my PBG4 I run in Classic mode. Also: Is the Audio port (noise) problem very prevalent?