It depends whether you're after a porn star because you want the added intense thrill of anticipatory and post-punk fantasy wanks while watching their movies. Therein, it's less about the punt per se. I've punted Stacy Saran and Tamara Grace and neither were genuine PSE fucks, but both were worthwhile because I regularly 'enjoy' their work. I would love to see Chantelle Fox and Valerie Fox for the same reason.
If it's a genuine PSE service you're after, that's a different matter.