my opinion, value it as you please:
michelin is so so, i think to be over priced, but i run potenza S-03's which are only a little cheaper. i am getting new tires in the spring, and am on the line between michelin's, pirelli's, and bridgestones. up until now i would've been 100% bridgestone, but recently in F1 the tire match has kind of evened out, though ferrari still won with their specially developed bridgestones. i think they both have a tread wear of about 220, which is reallllll low, so tire life isn't a big concern. bridgestone and michelin are both very good tires, continental's are for 525iA's.
my $0.02