I play Harbour Town in practice frequently... always score well. When I play Valhalla and The Royal Melbourne (two of my favorite courses) I also score well... but in none of the three in tournaments for whatever reason. I guess I'm so eager that I stop thinking... or when I play them in practice I'm not thinking and when I play them in tournaments I try to think.
There are such great holes on Valhalla (2, 4, 6, 7, 12, 13, 15, 16 and 18) and Royal Melbourne (1, 2, 12, 15, 17, 18).
With The Royal Melbourne it isn't so much the holes shape or beauty, but the way the layout makes you play your tee shot. On many holes the fairway narrows out at full driver range make pulling out the driver (especially in Champ mode) risky... so I don't. Many other holes make you think... make choices and trade offs.
Greens on both courses are fair.
Got two more rounds on both, hope I can acquit myself better in them.