Just my 10pence worth.
MP4S on my GSF were brilliant. Feel, grip, wear all spot on.
Cant comment on the new Conti 7's, however in may experience on the last 3 cars (not the ISF which had bridge stones then MPSS) which had contis fitted when I got them, and then changed to the equivalent Michelin (MPSS, PS2 x2), the michelins I always felt gave better, steering feel, ride, noise, grip (esp wet) and most importantly(when your spanking £200+ a corner) wear.
I would check the usual suspects, KF were surprising competitive when I replaced 18" tyres earlier this year, and Costco had a cracking deal on the GSF tyres. Its a minefield but for me Michelin is almost a default choice. My new car has P zeros, and if I get to the point where they need changing will be going to MP4S or equivalent.