Best and cheapest bluetooth adapters and USB sensor bars for BT passthrough?

[trustandbust]

So I just bought a DolphinBar, because I read about how great it is a few years ago and I wanted to start playing some Wii games that I've never gotten around to playing. Now I see people saying that the DolphinBar isn't worth it at all everywhere and that I should instead get a USB sensor bar and a BT adapter.

Any recommendations? I bought my DolphinBar for 25 bucks, so I'd like the price to be not much higher than that.