KL: Stay here while you wait for a flight and do some shopping
I was mildly impressed with KL. It's super developed and has a nice feel, with loads of greenery. Everyone whinges about how there's bugger all in terms of sight seeing, and this is totally true, but I prefer enjoying the atmosphere of a place, and KL has nice atmosphere. It's also got great shopping everywhere, is cheap, clean and really easy to get around. Def worth an overnight stopover for some last minute shopping before you head home.
Insider Tip:Go shopping and haggle hard, but friendly.