The Electro Harmonix #1 Echo is simple to use, ruggedly build, and sounds great. I rarely turn the "Blend" knob past 1/4, the "Delay" knob gives you everything from short slapback to as long as you'll ever need for most live performances, with the most useful positions for me being around 12 o'clock to 1 o'clock or so. The "Feedback" knob allows 1 to an infinite number of repeats. The only thing this pedal is lacking is perhaps a reverse echo, but I wouldn't use it that much anyway. I find it is very easy to adjust on the fly, even in the middle of a tune, since the knobs are easy to see and bigger than some. I play all kinds of music but mostly contemporary christian stuff, and this pedal, combined with reverb and a nice tube amp, will allow you to do everything from U2 to Chris Tomlin and Anberlin. The only drawback is that you can ONLY use the AC power supply that is provided; you can't use a battery. This for me was fine, since I hate changing batteries in the middle of a gig or realizing that I don't have a spare. I highly recommend the #1 Echo pedal and believe it will fill the needs of most musicians, from amateur to professional. Keep it simple!