I played HT, Long Cove, Haig Point, and Kiawah Ocean on consecutive days back in 2004. I enjoyed each course, but I have to say that my favorite was Harbour Town. The conditions were impeccable, probably because I played on the final day the course was open to the public prior to the Heritage. I found that I had to constantly think my way around the golf course. Other than Pebble, I can not think of another high traffic public course with greens that small.
The Ocean was more aesthetically pleasing and, in my opinion, far more penal. I loved my round at the Ocean course, but I found that it did not force me to think as hard as HT did. I personally liked Long Cove better than the Ocean Course.