Just my feeling, it does no longer make sense to import aircraft into the EU. Exchange rates, protectionism and tax systems were successful in killing any advantages of importing. So, unless you hang your heart onto an aircraft which in not available in the EU and you can live with life long being hunted by authorities, just short - forget it!
Re-registration, taxation, mandatory avionics upgrading and the nerves you loose talking to XAAs are not worth it. If you really have an interesting bird and want that one, think of alternatives, keep it outside the EU and fly the bird there on your holidays ...