I haven't gotten around to perusing the video demo's on the Z-VEX site until today........... First of all, the videos are hysterical. I felt like a kid in a candy-store. I'm thinkin' Machine + Wah Probe + Fuzz Probe........ Couple of questions for those of you with experience..... What "wah" would you say the Wah Probe is akin too?? Is their any kind of proximity effect when two probes are adjacent to each other? What about RF interference? Will any "substances" like aluminum foil wrapped around yer foot "enhance" the probes effect?