I have operated a few of both G and N reg . To me the biggest benefit is using a FAA licence ....this means I can fly all the types I have access to without needing to keep ratings up to date . I have operated under both systems for the last 30 + years and can find no benefit at all to our EASA system especially if you fly many types . As for the aircraft I would say it's definitely cheaper and simpler especially if only doing few hours .