^ well to narrow down your choice u need to decide first on the style!!
Dekay and G&D play prog House.. the layd back easy warm up but def wont satisfy fast and high BPM trancelovers.. though Schulz gets to that edge with his prog-trance sets and even mix a few vocals too..
As for A&B or Remy or the rest.. well if they'll be up for a melodic set then they should get A&B or B&J but if they prefere something hard and techy then for sure they need to go Remy or Cosmic Gate!!
As for Johan Gielen.. well this guy is real good and plays almost everything he can get melodical and he would play very hard.. pretty much like the story of his productions!
but for me, i think whatever would be the choice, it'll be better than getting an A Class DJ! ppl should start getting introduced more to the scene, get to know and hear more DJs and have a glimpse of tomorrow's fav. DJs!!
Also having a House DJ all night like Cox or Sasha would be a waste of the advantage of the magical geographical location of Rum!!