Hello Fellow Outlawers!

I recently tried using a BK-Link RF wireless unit to send my subwoofer signal across the room so I wouldn't have to run wires in the attic (again!). It worked fine for about two months before I started getting some pretty loud rumble coming from my subwoofer that I can't seem to figure out, so it looks like I'm gonna have to break down and run about 40 to 50 feet of cable through my attic for the subwoofer. My question is, which would be better to use (from a sound and installation perspective): pre-terminated F-type coaxial cable or regular subwoofer RCA-type cable (assuming I can find one in the required length)? Thanks.