Thanks Guys

I was thinking from a tone perspective, would there be any reason not to use an external stomp either before or after the HD500 as opposed to within the loop itself? That is a good point about the volume control so what about another example at the other end. What if I put an OD/Dist before the HD500 instead of within the loop (placed in the first FX block)...any tonal issues with that?

eg.

[OD/Dist] ---> [HD500] ---> [FX1] ---> [FX2] ---> [FX3] ---> [FX4]

                    FX loop

[HD500] ---> [OD/Dist] ---> [FX1] ---> [FX2] ---> [FX3] ---> [FX4]

Thanks,

Derek