BTW, is nero 22.214.171.124a compatible with both of them?
I was burning with 20a1p the other day and it said "smartburn enabled"
so I figured it was compatible.[/QUOTE]
Nero 126.96.36.199a would be fine for XP systems with those drives, Vista requires Nero 7. I would go with the A3P or A4P, tho the A1P is decent with recent firmware.