Hmm, refined can mean many things...
I would say the Morgan is more civilized from a drive-ability aspect.
The Morgan is also much quieter at idle, with the G56 mufflers, and gets louder with right foot, but never as loud as the ACE.
They're different in different ways but it's fun to be re-familiarized with the Morgan's traits and compare them.
I'll have to eventually choose one, since having two three-wheelers is a bit silly, right?