Hi Norm,
I've been a Boss user for many years and in my opinion there is no finer looping pedal in the universe. Boss make 3 loop pedals, the RC50, 20, and 2. The 2 is fine unless you need more than 1 input. I have the 20 and use one input for my guitar and the other input for a knee level microphone to record various percussion instruments( djembe, cabasa, casaba, shakers, cowbell, thunder tube, goats toes, triangle, train whistle, slide whistle, etc). And be advised, looping is almost like learning a new instrument. It's gonna take some time to get the hang of it and get it to do what's inside of your head. But once you get the timing down it's a very cool thing!!!
Also, keep in mind even with the RC2 with one input, you could invest in an inexpensive, non-powered mixer and run your multiple input sources before your loop pedal. ( if needed)
The looping thing is cool and gives the performer variation from song to song without resorting to performing live with pre-recorded music, which many( this musician especially) find very lame and cheesey. Although this pedal comes equipped with pre-recorded drums it also comes with a seperate volume switch( that controls fake drums) to totally turn the fake drums all the way down. No offense intended to those of you out there who like pre-recorded music and/or fake drums........
Peace and Guitars,
SouthPaw41L
ps-here's a demo from the Boss pedal you're interested in;
http://www.youtube.com/watch?v=VOhEmferYjA
and here's your product from a site I use often;
http://www.music123.com/Boss-RC-2-Loop- … 5.Music123
Give everything but up.