I had some with DS and really liked them... I had the "full sling" style, which basically had two circles cut out of the inside layer... Now all I can find are the "side sling" versions, that just have that tiny little triangle of support on the outsides (that seems to want to cut straight across my breasts). Not supportive and not comfortable.
BUT - I did get some tanks at Target that I do like --- they're actually made by Bravado for Target. They're a stretchier material (which I'm hoping will help suck in the gut! and they seem to have decent support. Only available in white and black, but I'll take that with comfort and support over pretty colors that I'll never wear because they suck!