This is one of those questions where you will get (have gotten) many answers. My 75 has a heavier load and similar dimensions as yours, I've had 3 different skimmers over the years - AquaC ev180, Reef Octopus NWB 150 (INT150 now?), and currently Vertex Omega 150. I dont think any one of them would make or break the tank and all did well, but of the 3 I liked the RO best because it was set and forget, the omega 150 is very finicky for me at least but the craftsmanship is amazing.