VPI Classic Cartridge Help

Soon I will be purchasing a VPI Classic and an considering Cart choices. I would like to stick with a $5-700 price range initially. My current rig is a Rega Planar 2 with Ortofon Blue. I purchase a lot of used records at used record stores, thrift stores, etc and wondered about playing these records with a more expensive cartridge. I clean with a VPI RCM but am concerned about beating up a good cart. with "rough" records that have some scratches. Is there any particular cart or stylus type that I should consider? I wanted to order the VPI with the cart installed at the factory and have it checked by the dealer- I think that narrows the choice of cart. manufacturers.

The rest of my system: B&W 802D, Spectron amp, Cary SLP03 Preamp.