I have used SHIFT (M2 Comp) and Vroom (JL Wrangler) in the past year to sell two of my cars, SHIFT was definitely more seamless and better run but I didn't have any issues with Vroom.
I actually tried to sell the Wrangler via Autotrader/CarGurus/Craigslist and had only 1 real lead, everyone else was wholesalers or tire kickers trying to lowball me, once I realized Vroom would give me a few hundred bucks less than what I was asking for it was an easy decision.
I actually tried to sell the Wrangler via Autotrader/CarGurus/Craigslist and had only 1 real lead, everyone else was wholesalers or tire kickers trying to lowball me, once I realized Vroom would give me a few hundred bucks less than what I was asking for it was an easy decision.