The islands down around Koh Lipe & Tarutao Nat Park are stunning. It reminds me of El Nido & Tay Tay on Palawan. Most of Lipe itself has been pretty much ruined by an over abundance of longtails though. Stay up by Mountain Resort. You can start at Lipe, stay on a couple islands, & fly out of Langkawi. Nok Air has plane-bus-boat combo.