I use the SBD 6 strands on all my bows under 53# at my draw. Have used the 8 strands also. I like the skinny strings a lot. It makes a big difference for the relatively light poundage bows I shoot. I need all the extra power I can get.
I order the recurve wraps for my 'curves and they seem good, haven't compared to other makes though.
I'm not that big of a fan of the SBD yarn silencers though. I perfer to install my own usually little catwhiskers (installed Ryan Sanpei's way) or bowhush wool. Just my preference.