Hi, I have a Wan Bernadel carved bass from String Emporium. Pretty decent bass, i guess. I play in a "fully" acoustic setting with classical guitar and double bass. No amplification! You can pretty much carry on a conversation sitting directly in front of us. We also perform in concert auditoriums quite a bit. I have been using Spiro Reds lately and my bass sings nicely. Arco however, is a struggle, especially playing pianissimo. I am about 50/50 arco and pizz. I like a slightly different sound than most on this forum, I think? I solo on almost every piece, so I need a string that sustains nicely while playing pizz. And, a string that starts really easily with the bow. I can absolutely kill the classical guitar in volume with a bow. lol (payback for my rock and roll days.) My bass doesn't like Spiro weichs. Spiro solos are wimpy on E string. Zyex medium were pretty good, but arco was not great on A and E. HH mediums were good, but arco was iffy. I was thinking of trying Obligatos, as I have heard no one say they didn't bow well. Also, maybe Zyex lights would be good. Maybe Obligatos on top of Spiro mediums. Anyway, the rabbit hole can be very deep! Any suggestions would be greatly appreciated.