A famous italian bass soloist recommended these strings to me, and he was right. Very, very good strings, way better than the Spirocore solo set. And strangely, way better than the Belcanto Orchestra set as well... i'm glad i bought two sets for my basses.
They have more warmth and depth than the Spirocores, a richer timbre, and they're perfectly balanced as a set.
A nice surprise because i didn't really expect such high quality.