Recommend your favorite supportive bikini tops that A) aren't too expensive (less than $40 at most), and B) are not halter. Cross back or over the shoulder are fine but halter hurts my neck and gives me a headache.

I really just need a supportive top to wear under a rash guard so it doesn't need to look that great. My nursing boobs need a lot of support but I don't really want to buy anything that expensive since I'll probably be a different size next summer or when I wean. I'm about a 36D now.