I've never had a footjob before, my gf has really sharp toe nails and rough feet because she walks around barefoot outside a lot...so I'd have to say Paizuri (Tit fucking) since it's what I've experienced.
i havent tried either, to be honest, but ive been wanting to try both because apparently theyre both supposed to feel really good for different reasons.
I prefer footjobs because it's easier for me, and I can do things like play a game while still sating my man. But then boobjobs are good too because you get to see his face <3