Jul, we spent about 6 weeks in Malaysia during last year. I wasn’t entirely excited by it.
However the Perenthian Islands are noteworthy for the snorkelling and diving on offer – there’s nothing else though. Just going up to 1 meter depth is enough to see about 30 fish of about 5 varieties from the main beach. There are sharks and turtles too. It may be monsoon there though.
Also although I haven’t been the national park rain forrest is supposed to be good because I guy I met yesterday said that there was huge snakes and very impressive wildlife in abundance.
If you go to Thailand, my favourite place is Kachanapuri due to the tiger temple and eravan waterfalls – 7 different waterfalls going up a mountain within walking distance.