I'm glad you've heard some sounds you liked. It is enlightening and rewarding to hear good new sounds, that's ear candy. And who doesn't like a treat, or something sweet?
I use reverb all the time, and like wet sounds, or big room, or hall sounds. So, that's a quick endorsement, easily said.
I use delay often, as much as possible, and always with a Tele, because I think that Roy Buchanan used it... beautifully!
It enhances tone IMO, like Bill Kirchen's slap back I think - think Hot Rod Lincoln. And Hank Marvin used tape echo with his Burns' and Strats, on his classic creations in music, which I consider works of art. You can hear it plainly, clear here.http://www.youtube.com/watch?v=yEXorY7Aubk