I am also with Southern Aircraft Consultancy who give a very good service.
If you have an IR and want to legally fly in the airways system then N-reg undoubtedly has far more advantages than disadvantages both for aircraft and pilot. Although there are some minor loopholes to negotiate.
Basically the country who invented aviation still do it best. They have more aircraft, more pilots (far more pilots with an IR), very few landing fees, excellent weather services.
God bless America
Shame they can't play football (or is it soccer?)