In the trills topic we have discussed about using Vaccai to help devloping technique. I had a chat ith my teacher today who was very pleased with my progress this week, and I confessed that I had been practising with Vaccai. I can't put it down to either (a) the Vaccai or (

the practise, but I suspect it is the latter. Vaccai just helped me be a bit more structured about what I do!
My teacher said she doesn't give anyone Vaccai as she hates it from doing soooo much of it at the Guildhall, and suggested that Concone would be another alternative. (Anyone know of an edition of Concone with practie CD?)
Does anyone use any methods regularly, and what do you think of them? Are they helpful? Should they be sued only with a teacher?
Any thoughts?