I have 2 pairs of non padded tights, one from Performance and one from Hind. I have had both for years and I like them, because I also wear them for running, walking, and hiking. The regular bike shorts feel fine under them. I also have a pair of Ibex wool/windproof tights that are for winter sports that I have won cycling a few times. It has to be in the thirties to need these. Then I wear long wool ski socks, so almost my whole leg is covered.
The Andiamo liners s*uck. The chamois is huge and they fit horribly under anything I tried them with. However, I bought a pair of Sugoi liners that fit like cycling shorts, have a nice chamois and would be good under tights, too.