I usually like to play on Dominants, but I put a set of these on a student cello and they really made it sing compared to the steel strings that shipped with it. They warm up faster than other synthetic core strings, but you still need take your time breaking them in, and they should provide good sustain and rich overtones, especially for arco. They are not gut strings, but they are very flexible and they stay in tune really well, which makes them good for beginners and intermediate players who have to change venues frequently.