Hello, I'm new to this site, but I really appreciate the vast amount of info you people have amassed. I'm not a tech, I'm just an analog effect freak. I'm looking to get an oilcan unit for my BF Fender Bassman. Can anyone tell me if the Fender Echo Reverb is an oilcan delay AND a spring reverb? Or does the reverb also come from the oilcan? Are there problems with the Fender E/R that I should know about? Can you use the reverb without the echo and vice-versa? How big of a difference is there between the earlier E/R and the later E/R III? I'm sorry if my questions sound trite, I really am trying to learn the basics here so that I can make an informed buy. I've been unable to find hardly any info on these units anywhere on the net or otherwise (and I noticed quite a few fenders in pics at the tel ray site). Any info anyone has on these units would help me immensely. Thanks very much.