I've never really found GHK to be crowded.
Having the benefits of the club throughout the day as a Diamond, added to a gigantic suite at no extra cost with DSU, (I guess you would have more space in a bungalow, but do you really need it?) Plus a pool second to none. (If there's a better pool with waterslides and waterfall grottos on the island, I'd like to know) Add on top food I've always enjoyed at Tidepools, easy access to a beach (even if it isn't that great a beach)... All those things make my decision easy. It's not perfect, and maybe it doesn't have the local or "aloha" feel like some places might, but you get that when exploring the island.
GHK all the way.
I utilize my Govt rate+DSU. $325 nightly.