Here i thought i was the only mad one trying just 3 lounges!
I suppose the experience will vary depending on how busy the lounge is. During my visit, the Silver Kris lounge was fantastic - a great breakfast spread, incl. Asian food and a variety of western favorites. PLUS there was singapore sling ice cream for breakfast.
The AC lounge was awful...super busy with not a seat in sight...I would divert to the SQ lounge just across the hall. Standard food offerings, although i can see how it could be a beautiful lounge when it wasn't so busy.
The UA lounge takes middle ground...beautiful facility with the best showers of all three - added plus is the cowshed toiletries i love so much, vs the generic dollar shop stuff in silver kris lounge. The bar also served decent NV champagne (moet, IIRC)
I just wish more airports could spoil us with such a nice range of lounges!