Thanks for the comments David. Problem is I like both options too !
I will see how the high level option performs over the next couple of months. If I like it then I will sell the Mivv. If you are interested drop me a PM.
The high level definitely sounds good and doesnt seem to be retrictive at all, which I thought it might be given the extra pipe length. It also doesnt pop n fart so much as the Mivv on the over-run, which pleases me.
Fortunately I dont have a pillion to worry about which makes life easier