No I didn't go for the E&S with send & return.
Although now you mention it, that's a really good feature to have if you're running an EFX 500 becuase I take it you just continually bypass the EFX unit and then just flip the bypass switch off when you choose to use an effect in the mix?
I have thought about getting an EFX but not sure if I will. I'm just getting the X 3004 to run through the FX loop of the LE. Looking forward to it too.
So you really notice the difference in sound from your Urei when you turn the bypass of the E&S off and run the signal through the EFX 500?