average, more brittle sound in relatively good playability

I have tried as a professional musician, violinist, many strings to good violins, violins on poorer.
The Tonica strings offer a cheap alternative to the known Dominant strings.
In subjectively higher string tension they produce a rather brittle, a little ugly sound.
I like to compare to the similarly priced lying Dominant strings that offer an easier playability and a warmer sound with a higher elasticity. In the dominant A-string, it takes a few days break in period until it loses its once also more brittle sound.
The Tonica strings never lose him.
Nevertheless, it is characterized by high tuning stability, and by a sound balance in regard to the whole set of strings.
What it always leaves me also recommend the tonic chord is the fact that you can buy and keep ready replacement strings for half violin, which then also attached to the three-quarter violin, if you have not used them.
This flexibility is unique in my opinion.
Still, I think that with Dominant strings - achieved a better sound experience - just on a student violin.
Therefore, only a limited buy recommendation.
But ultimately you have on each violin strings to try to achieve the optimum result.