We`re off to Bansko at Feb half term as well, 5 familys of 4, kids ages from 4 to14 so should be good, staying at Cedar lodge apts.
We`ve been to Boro twice and La Thuile (Italy) once, so due to half term prices we found Bansko to be our best bet for cost.
Have fun and i`ll try not run into you as you sit on the piste!