If you want cheap ones go get the aluminum buckets off of Jegs or Summit. If you want them for looks get some Corbeaus or Ebay brand. If you wan them for safety and performance get some Recaros or Sparcos or anything FIA certified. If you want ridiculously expensive and to look cool get Brides but you'll lose quality.
I had Corbeau CR-1s in a daily. But them when I was young and dumb. They were okay for short drives and such but the lack of a headrest, lumbar support, and so on made it undesirable to drive the car great distances. Butall of these are my opinion and you may have different likes and dislikes than me.
Find something that works for you, something you like, something that will work for you. In my opinion if you want it to work with the stock seatbelt, take the guide off of your stock seat and mount it to the racing seat so it still works, has a decent angle and so on. F-Body guys have been doing that for years because of the lack of quality built harness bars.