Pattaya = ladyboys, scoobydoo divers,crap vis, German sex tourists, just a few so-so wrecks nothing great
Phuket = less ladyboys, 2 good wrecks, reef, better life quality than Pattaya (see Protech)
Tioman = reef, scoobydoo divers, no ladyboys, 6hrs from repulse/pow (in small uncomfartable converted fishing boat), 2hrs from couple ok wrecks, quiet island life (compared to above 2) (see B&J diving)
Singapore = only LOB diving weekends to world class wrecks incl POW/repulse (see whitemanta.com or friendlywaters (cheaper))
Koh samui = ladyboys, scoobydoo divers, reef,
koh tao = scooby doo divers, good tech wrecks off mv trident. (see MV trident, above)
Subic bay philliines = whole heap of good wrecks 1hr from shore
If I was looking for 'tech holiday for 2 months' Id probably move around. Good to base where theres lots of scoobydoo tourist divers as after days diving easy shag when you get tired of the ladyboys
