I will be flying SFO-SIN-DEL on SQ. My connections in SIN include an 8 hour layover coming back, but i can make it a one day and 8 hour layover if i want. I've been pretty much everywhere in SE Asia except Singapore and India. Thoughts on whether the extra day is better spent in India - or overnight in SIN on the way back home? With the 8 hour layover, I will leave the airport and get some food, shop and look around. Will that be enough?