My wife got me a resonator for Christmas a few years back because she found out I had been messing around with one at the local music store. Once I had it, I realized that I really didn't have a good idea of how to play it. I surfed the web and came across Kirk playing slide on youtube and was impressed. I saw this particular package but after a little research I decided to try Planetalk first and I was so pleased with it that I then bought his slide package. I found this to be an excellent addition to Planetalk because it expanded my understanding of the fretboard by showing relationships between different chords. I would also highly recommend his brass slide, its heavy which makes it easier to play and it sounds great too.