Julian,
Your not wrong there. The Manx reg is becoming more popular to our purchasers leaving them considering either the Manx or US N reg.
From a resale point of view stay N rather than Manx on something like a F900 but thats only from a point of resale. Most buyers are in the US as you will appreciate and we have found some our of recent US buyers to be a little unsure about the Manx reg and even are unsure to its existance so are hence on occasion uncomfortable when looking at buying a Manx registered aircraft.