I've used both pickups, and I much prefer the BBQ to the C5. The C5 has a ton of bass and a ton of treble, with scooped mids. The BBQ has a stong bass and midrange, with slightly pulled back highs. It's a warmer sounding pickup than the C5, and it has a little less output. I didn't like the C5 at all, it was too bright and bassy, and it had too much output.
Ryan