Haines drawers, the kind you get 6 for about $10 from Walmart and you have to dig around to find a pack that hasn't been opened. I like the bikini or hipster type cut. I don't own any thongs or lacy/sexy underwear.
I like to keep it simple with cotton panties and I'll throw in a lace every now and then but I like V-cut bikini or hipsters and then free ballin when I'm feeling some kinda way.