Cartridge upgrade for VPI Scoutmaster

Hello All!
I have a VPI Scoutmaster with a Dynavector 20XH. My phonostage, pre amp, and amps are all Pass Labs. IC cables are Harmonic Technology Magic, and speaker cables are Harmonic Technology Magic Tweeter and Pro-9+ in a bi-wired configuration. VSA speakers. My stereo goal- realism.
I have two questions I was hoping to get help with.
1. What would be a great low to medium output cart for my set-up? 2K or less. And why.
2.How risky is it to buy a used cart. Is it worth the $ saved?
Thanks for your input!
Steve