for me, delay is one of my favorite effects. it can make you sound like several guitarist at once, and it can also fatten up your sound alot. I love playing around with delay for clean stuff. it can make a simple riff sound very complicated. I also like setting the delay time down close to as far as it will go and setting the feedback to around 5-10% when playing chunky distorted rythme riffs. it adds a little extra metal/chunky sound to it. Delay can be awsome and add WAY more than you ever expected to you overall sound, IF you're patient enough to play around with it.