Hang on, is it 1995 again?
I don't mind either, but Blur we're absolutely shite when I saw them at V97 in Leeds, we didn't even watch all their set, instead checking out who was headlining the second stage at the same time (forget who now). But, Oasis were pretty good live on the few occasions I saw them, the last being in Manchester in 2005.
From a musicians point of view, Blur are better because Noel Gallagher can't play guitar for shit, good songwriter though, whereas as Graham Coxon is a brilliant guitarist IMO