Singapore Airlines Changi airport lounge will be among the best for following reasons – For first class, there is a valet service at check-in, the first class lounge employ cook to prepare hot food (from selection) and a bar where one could order great cocktails – although bar hours are limited. There are good showers, smokers room and a very good collection of newspaper and magazines. The food and drinks selection is quite good and for night flight it is ideal to have dinner in the lounge and then go straight to sleep in the plane. The business class lounge is a shade lower in facility – however there are enough seats hence one could get privacy. BA T5 business class lounge (south side) is ridiculas as to go there one has to go down 1 level after security check and then go up 3 levels. The lounge is crowded all the time – however there is plenty of drinks and snacks. The newspaper/magazine supply is not replenished easiliy. Someone indicated Frankfurt first class lounge – it is vey difficult to locate that for transit passengers – the signs are ridiculas.