Thanks to everyone who has thus far responded, with a special nod of appreciation to Rainer, who gave a very detailed, informative analysis of my quest. I'm naive to all the gadgetry right now, but I know what I want it to do, so to speak.
The Boss RC-50 looks very enticing. Thanks David, for making me aware of this. Is there any word on when this will be available for purchase, or a rough price guess?
Thanks again for the warm welcome and assistance!