I've always had good luck with Co-Operators.
Three Porsches with them over the years.
'00 Viper - Steel Grey (ROE smooth tubes, RandomTech hi-flow cats, muffler delete)
'07 Infiniti G35 - Daily grind mobile
'04 Subaru WRX wagon - SOLD
'97 540i - SOLD
'87 Porsche 930 (B&B exhaust, SC cams, Garrett hybrid turbo, adjustable boost control, Andial fuel enrichment - 400 h.p.) - SOLD