I play Gassan Legacy and Gassan Panorama regularly. Legacy is the best of the two. Panorama is a bit boring Haven't played Gassan Kunthan in a while, but I love the course. Haripunchai is the cheapest of them all and it's always in good nick. The only problem is that it's a 9 hole course so you may be unlucky and get behind an 8-ball (only in Thailand ☹️). Then there is Alpine. Great course, but expensive.