Love the idea of a looper, but I don't even know which end is up when it comes to them. What is the VERY easiest onew/the shortest learning curve? Maybe the Boomerang+? When will the 'Rang be out? How about the EHX 16-Second Delay (they're supposed to soon have a new model that eliminates the 4-count problem, I think)? Any opinions welcomed. Thanks.