Because I know this was weighing heavy on everyone.
The Merona Ultimate tees from Target get a thumbs up. Nice feel and cut. Pretty colors. Good price.
The Croft and Barrow tanks from Kohl's get the bid this year. Thick enough straps and weight to be worn alone, but not bulky. They are basic colors. From past experience they won't have years of life, but for $6 I don't mind replacing.
I also picked up some racer back workout tanks from Costco that are very nice. Good cut for a self conscious tummy area and not too pricey.