I ordered a Conrad amp, it comes without a reverb unit. Actually Conrad offered to put one in it but I was concerned, because it is such a small cabinet, about the length of the springs. So I decided that I would buy a reverb pedal. I have done some research and come up with a few Boss RV-5, Holy Grail, Line 6 Verbzilla, Digitech Digiverb. I am really only looking for a spring reverb sound just good, clean, something that does not suck the tone out of the signal. Any thoughts?