I am looking to buy a looper, have been doing a lot of research and have changed my mind several times between these two. The boss has good memory but the digitech has the sd card slot and it comes with software which is good for me. I was put off by the jamman as i read in a review that you could not use the guitar jack and a mike simultaneously? Im not too bothered about having any effects as i have a line 6 amp.. I would quite like a good rhythm section though, any help would be great,