I prefer the R33 over the R34 because IMO, the R33 has better styling than the R34. The front lights has a more 'aggressive' and 'muscular' look to it, compared to the R34 (IMO). The rear lights are pretty much the same.
Gotta agree with GT7058. The Pagani Zonda is one of my favourites too, though I forgot to list this baby in my previous post. Just love those rear and front lights. I love those exhaust pipes too.