agree with the FlexSteels mid forward soundings... the guitarist in my band prefer when I use these cause he can hear me better in band mix.
on the last long subject, the last Swing 66 SS set that I used about two year ago, only gave me roughly 2 months of usage despite not so intensively played as the current FlexSteels. The ProSteels gave me longer... the brightness were still going strong after about 6 months before I sold the bass.
my take on the other different characteristics of the three... I had to use .35 G and .55 D strings and they still made the tip of my index finger burnt due to their stiffness and roughness or else I couldn't stand popping them when playing slap style. Not to mention the thin sounding of these strings were not my kind of liking.
With the ProSteels I could use .40 G and .60 D strings to get away with the burnt fingertip, but they were still thin sounding to me, especially when the G string was popped in slap songs. I tamed this by rolling off the treble pot, but that would give me overall muffled sound, especially from the low B string.
With the FlexSteels I have no problem using .45 G and .65 D strings (though later I switched to .60 D to get more balanced tension with the other strings). I use them with the treble pot stays in center detent.
