I was actually refering to the PX-W5224TA, but the same refers to the 230A, less functionality is a moot point for me, I almost never burn cds, and if I do, it's just small stuff to give to others (reports and so on). Gigarec, varirec, cache, I would guess is features I never will need. So the readperformance is the main thing (does it have the singel-session thing that supposedly is good for copy-protected discs etc.)
EDIT: I see the 230A has a diffrent offset, does that mean that the mechanic parts in the two ar not the same? the w5224a has the same offset as the premium though.