Dual Bluetooth/ Wifi Usb

I am in need of a dual wifi and bluetooth usb device, i need an ok signal but at the same time i want to be kind of cheap.

Ideally i would like ot pay $15-$20 BUT if someone can recommend something that is high quality i am willing to dish out twice as much if signal is good. I suppose there is a bit of an issue with the location of the room i am going to put the pc in

I have 4 walls the signal has to go through and there is some metal bars as well, i was using a wifi usb stick before but i was slow connection and frequent signal breaks and i just decided to go full ethernet and stapled a whole pathway of cable to the room.

I more than likely will switch the this pc the bluetooth/wifi usb would go in because of the metal bars around the room but i still want something with decent signal someone can recommend.

The usb would be preferred if its also raspberry pi 2 compatible

 

I found this one on Amazon. I suggest you look at the customer reviews and answered questions.
http://www.amazon.com/gp/product/B005QUQPDA?*Version*=1&*entries*=0