Even if you fly a lot, you'll agree that recurrent training is a good investment. But too often, pilots find that the time they spend with an instructor is largely wasted on procedures that simply don't match up to the way they fly. For example, some instructors insist on ignoring GPS in favor of conducting an IFR refresher using only VORs. It might be that the instructor just isn't familiar with the operating system of the unit installed in the airplane-especially if you're doing the training in your own machine. Even popular GPS navigators such as the Garmin 430/530 series interface differently with autopilots and other systems in certain installations, and the instructor may be reverting to using the equipment that is more universal.