So, my longtime go-to strings for my Stingray 4 HH have been DR Fat Beams. I've been really happy with these strings in terms of tone, feel and longevity. Recently, though, I was curious to try a set of nickel strings and installed a set of Pure Blues 45-105 (same gauge as the Fat Beams). Being round core, they feel similar in tension to the FB's, but just a tad stiffer. I actually like the bit of extra tension. The E string, in particular, feels and sounds tighter compared to the FB's. They still feel more flexible than hex core rounds in the same gauge, though. The Pure Blues actually feel, to me, a little bit rougher than the FB's. Kind of a surprise considering they are nickel and the FB's are SS. Not really sure what "quantum nickel" is, but maybe that could be a factor in the difference in feel. They are a bit zingy, as they were just recently installed. Even so, they have plenty of lows and a nice prominent midrange (upper midrange?) that I don't hear as much with the FB's. Once these settle in, they might be just the ticket for this bass. If not, I'm happy to go back to the Fat's. Has anyone else installed Pure Blues on your Ray? What have been your impressions?