Which GPS is THE best?? I won't argue for the best but I've had a Lowrance Globalmap 100 for two years now and have upgraded the software within from their sight 4 times now. My son bought a new Vista as soon as they hit the market. I think it is really nice also but my trusty old 100 regularly maintains a lock in heavy cover when the Vista doesn't. I am eagerly awaiting the still promised release of the new Lowrance unit.