The Boomerang (or as we loopers call it, the "rang") is the best tool that I have ever used. It tirelessly and without complaint will groove all night long to let you develop some musical ideas. It allows me to perform solo, gives me an opportunity to compose and work out melodic and solo ideas. I have 2 rangs (one is a backup). Rumor has it that a new "studio quality" rang is in the works. Do I hear "Beta Tester" ..