Uniroyal rainsport 3's are a brilliant all round tyre, i'v ran them on my
cupra with no traction issues, i'v ran them on my stage 2 tuned e39 530d without any issues, I ran the rain sport 2's on my stage 2 Passat TDI and they where more biased to wet weather but still a very good tyre.
If money was no object, I wouldn't personally know as i'v not used them back to back but some of the Michelin offerings may be better but for price and in my opinion your hard set to find a better all round tyre, hankook v12 evo's are another good tyre, and at the
lower end of the scale would be the kumho ecsta's good tyre but not as good as the others, i'v also just put a set of maxxis tyres on my Audi, can't remember the model of them but they haven't been bad neither with plenty of grip but the Quattro system makes most tyres feel good, I'd of not chose them normally but there had been a price misprint and I got a set of 5 for £130 in 255/45/19 guise so as you can imagine I snapped them up lol!