Pros:
Tonica are exceptionally good and neutral sounding strings. Lasted much, much longer than dominants before the tone started fading.
These strings are what I'd start with on any violin when making decisions about whether I need a darker or brighter string for a specific instrument.
They're are as neutral as it gets, and sound really great.
Cons:
Nothing for the price!
Other:
Best place to start period on any instrument at any level, and work out what you need from there...