You'll find what you're after at any of the three you listed, plus Lakewood.
It might help to check out the location of things you're interested in seeing/doing (if any) outside of the campground. There's a lot of room between the big three campgrounds in the south and Myrtle Beach Travel Park to the north. I'd probably go with one that's closer to most of the things you're interested in.
We prefer MBTP because it's closer to the things we like to do, it's a bit calmer and most definitely because of the lack of golf carts.
Also, it's getting very late to be making reservations at any of the campgrounds in MB for this summer. They all generally start booking up about a year in advance. So your choices may be limited by availability.