Originally Posted by Vulcan

I do a Mileage run every year to either SIN/BKK. My prefrerence, by far, is BKK. Much more to see, do, SHOP, etc. The Skytrain and the new Subway takes most of the pain out of getting around.
I came back last week from 5 days there, and still have fun wandering around the Pratunam Market, the Chatuchak Market, the Lumphini Market (Did I mention SHOPPING), and even went back to the river to see the Grand Palace for the first time in 4 visits.

This is always a personal choice issue. As the other posts say, going to SIN is like visiting a squaky clean, modern metropolis. BKK is just more exotic and more faceted (just one man's opinion)