HAHA...that's a good question. i went to the casino gym, AKA Platinum's, for 2.5 years. it's a nice gym, i like it. But i changed to Gold's becuase it was closer to cabarete for me and i was riding a bike back and forth from cabarete. but the other things i really like about Gold's is that they always have soap in the bathroom and in the showers. Always! The casino gym, aka Platinum's, seldom had soap. also, gold's gym give you a nice big towel and a locker key as soon as you walk in; they also have the A/C cranked up, and they have a really nice boxing room upstairs with 4 punching bags--all different sizes, speed bags, etc. Platinum has two of these as well, but Gold's gym has more and they are of better quality.
One small thing i did not like about platinum's was that they would play the music very, very loud like a colmado, and i really disliked that. but they were always willing to turn it down if you asked. but the next day, it was up high as ever again. maybe they have gotten better.
Anyway, you can't go wrong with either gym...they're both nice.
frank