I have stuck to using solely Round DR Hi Beams for quite a while now on my GMP Elite 4 string. My band plays in drop C# tuning and I don't seem to have the clarity I would like on the low C#. I found myself resorting to a pick for recording because it just sounded clearer. I've have bought thicker gauge strings hoping that would compensate for the floppy, buzzing, clicking, unclear sound, it helped but I still wasn't satisfied. I was curious if switching to flats or semi rounds would help my case any? The thing is I do a lot of slapping as well. I still need to be able to cut the mix being in a heavier band. We're very bass driven so the bass needs to be very evident.