That's a tough question, Roy. I do like playing at places like Shinnecock, Medinah, Sawgrass and places that have the U.S. Open rough because it places a premium on your shots off the tee to stay in the fairway. Even approach shots, if missed can get you into trouble and then your scrambling to just make par, which is very realistic.
On the other hand, playing some of the classic courses and some of these new APCD courses that don't have that deep rough, but have the sloped fairways & roughs and greens with numerous undulations in them, make it a challenge to aim correctly when hitting approaches especially when the breeze or wind is blowing the other direction. Then if you hit the greens there is sometimes the roller coaster ride of a huge breaker that has to go up a slope and back down again. I played a course a little while back and I can't remember at the moment which one it was, but I had an uphill putt, I believe on fast and firm greens, that I hit up to the hole, but it stopped short by an inch or so and rolled all the way back down to my feet some 15 ft or more away.
Some of the challenging greens can really smoke you if you're not putting good, but on the other hand, making a big double breaker from 35 ft or more for birdie is really great fun to watch.
So, either type is fine with me. I like playing both for the challenge and realism.