I've smoked Nightcap but not Royal Yacht (have the tin unopened as yet). My experience with Nightcap is, smoke
it first in a small bowl (or partially filled bowl), and don't smoke it fast. See how you do. I smoked it in a big bowl,
fast, and it made me somewhat lightheaded. Also, I found after the tin had been opened for a few days, it became
just enough tamer to enjoy, while it is still full strength. I find Dunhill 965 to have a low key nicotine kick, just
about right. You know it's there, but it's not obtrusive. Five Brothers has some nicotine, but it smokes so fast,
it's transitory. I like the stronger tobaccos in rotation with milder blends. I don't seem hooked on nicotine. I
wouldn't like that.