A320 or ATR

Background : Pilot (3000 hr) with ATPL. With no Civil aviation experience. Hi guys. I have been offered Trainee Captain on ATR and SFO on 320 by very reputed airline. Base is not a concern. Given I have no plans to go abroad and fly, should I go ahead with ATR or take SFO on 320 and fly 500 hrs to apply for captaincy. I don't know anyone who flies ATR. All my friends in 320 don't recommend ATR. TIA