TH HR Newport Beach slide is pretty crappy. It was kinda tacked into the property after the fact and just kinda dumps the kids out into a trough next to the pool. My kids like it fine, but it's nothing they particularly get excited about.

I'll throw Aviara's slide into the mix -- though the rack rates there are pretty ridiculous there.

GH Kauai is one of my faves for all-in water fun. Nothing's gonna match the Grand Wailea for slidesville, but there's high-key waterslide as well as low-key float around activities available at the GH.

HR Maui has a monster slide, but your kids should be good swimmers because it dumps out into an 8-foot-deep pool at the bottom.

Haven't been to Baha Mar but the pics make it look pretty awesome.