Clear Aligners and Retainers, Should I print with Grey-White Generic Resin or Dental Model Resin?

With price been the same I have been printing with Dental Model resin for aligners and retainers (thermoforming) for 3 months now ( I was using Grey-White Generic resin for over a year before that). The surface finish of Dental Model resin compared to Grey-White resin is far better, also the imitation of Gypsum feel.

What would you suggest is printing with Dental Model resin better than Grey resin when the only thing you do is produce Aligners and Retainers from those models you print?

Thank you in advance,