Hmm...even though it's an old thread, I found Ambrielle Smooth Revolution cami's at JC Penney and at Kohl's too I think. Go on sale frequently. Quite surprising how much better and more comfortable these are than the 'usual' cotton tanks.
After reading YLF throughout summer, I went looking for 'better' camis - and found some good basic ones. Only $11 right now. I got cream, black, white, chocolate brown back in the summer.
I also find the shelf-bra in a lot of cami's very annoying. It rides up, doesn't stay in place etc. Plus, I'm not a fan of the shelf bra flipping up as I put on the tank/cami. This leads to having to reach under the cami and pull the shelf-thingie down. Um...no thanks.
http://www2.jcpenney.com/jcp/X.....S4Filter=N
And they appear to have a lace-edged one now too, though I haven't tried it:
http://www2.jcpenney.com/jcp/X.....S4Filter=N