I have a pro. I’ll be honest and say premium is better, premium is better for almost every game imo. Toys/mechs add excitement or another dimension to games especially to visitors/ people who don’t play a lot or to kids or big kids! Mechs can also give better visual queues on what to shoot for beginners or people who can rarely even glance away from the flippers.
In a flat comparison a premium almost always wins against a pro unless you really, really valve not having to tweak mechs (because let’s be honest premiums of any game almost always have a toy that needs tweaking that pros don’t have, although pros may not be tweak free either!)
But it’s not a flat comparison, it’s a pro +$2100 or a premium. If I had space for one machine and money for a premium I’d get a premium. If I had endless money, I’d get a premium. I have space for 4 machines, for how much I want to spend on machines I can either have 4 pros or 3 premiums. I opted for 4 pros, I played every day so I appreciate the variety that 1 extra machine gives me. Someone else may valve the added fun factor of 3 premiums over the variety of 4 pros.
I don’t think when people say ‘the pro is better’ they really mean the pro is better, they mean ‘hey to me the premium isnt worth $2100 more’