Lyra Dorian or Lyra Delos cartridge?

I ordered a Lyra Dorian instead of the Lyra Delos because a sales rep at the company I called said there was really no difference in sound quality so the Dorian would save me some money. I would appreciate it if anyone who is familiar with these cartridges could let me know if the Delos is the better cartridge. My turntable is a VPI HW-19 MK-3 and the tonearm is a Audioquest PT-6. Thanks,Montgomery