Service Pack 2 or Service pack 3?

I have a choice for an upgrade or leave as is. But i feel satisfied with service pack 2 but I also read Service pack 3 has some incompatabilities. any thoughts on this one??
Edit: YES windows XP
Answer #1
Windows XP?
if so, get the SP3, it fixes some bugs and adds more compatibility in hardware/software
Answer #2
with xp sp3 mate
it depends on ur computer and the software and appz u run
when i tried sp3
on my old computer it just blue screend me
so i dont kno if ur comp is compatible with sp3 because it has heaps of bugs
and yeah
if i was u
id stick with sp2 of xp