Ok I am a huge Volvo fan I currently have a Volvo 850 T5 its a great car. I test drove the C30 T5 and while its a great car I feel that it needed some improvements to the power band. The Suspension is great and the car handles like a Go Cart. My friend actually just purchased one and did a few mods, Air Intake, full 3in Exhaust and reprogrammed the ecu. He is getting 15psi out of the factory turbo. I drove it and man is it fast!!!
Anywho Volvos are great cars and they last forever! My recommendation is just go test drive one and check out the volvo forums: volvospeed.com, Volvo Forums, swedespeed. Im sure you can fnd some info.