After using wound A strings for most of my violin playing life, I decided to try steel (Russian) A strings. These Warschal strings are the best ever for my violin and my playing. The sound is powerful but clear and sweet. It does blend beautifully with the Warshal Amber E, which is now my regular E and provides enough warmth for the transition to the D. (I'm now using Timbre Strings on the D and G).
The Avantgarde is a little warmer than the regular Russian A, just as clear, and seems a bit more powerful. It works well in orchestra as well as chamber music settings. Of course, it's very stable, though it seems the Avantgarde needs a couple of hours to totally settle in compared to the regular Russian A.
There is a perceptible texture to the string when shifting which takes about 10 minutes to get used to, and almost seems like an aid to shift distance while practicing. It certainly causes no difficulty.
Highly recommended, and outstanding.