The biggest difference will be where the warranty is located. Keep in mind there is an extended warranty that you should register for and that means for 5 years if you want to take advantage of that it needs to go to the country of origin for that service. My recommendation is to work with your local retailer and make your best deal. This will get you the best long range support. You never know how impotant that is until you need it.
Jan Crittenden Livingston
Product Manager, HPX500, HVX200, DVX100
Panasonic Broadcast & TV Systems