We haven't used Minnie Vans since the price increase but having used MV's, Lyft and Uber at WDW I can definitely say that it was not a lower quality experience. We've had some outright dodgy experiences particularly with Uber (unsafe driving, cars not in good shape, etc) but every single Minnie Van trip we've ever taken (probably well over 20) has been excellent. Vans were always spotless, drivers were always kind and entertaining. The pricing increase may have knocked this out of being a reasonable luxury for us but we never felt it was lower quality than the alternatives.