Magellan eXplorist 500 Handheld GPS Receiver

Unreliable pile of 'you-know-what'. Worked fine for about 2 months then refused to power up. Fresh batteries, no go. Called customer "service". Outsourced call center to India; rep followed generic script telling me to: 1) use lithium-ion batteries, and 2) press "power + NAV" simultaneously. As suspected, bogus advice. Fresh batteries metered out to 1.62 volts each / 4.84 volts total. Yes, I tried lithium-ion batteries anyway. Still no-go. Three separate attempts to contact product "support" via Internet for registered users. No substantive reply. Am still waiting for RMA to get warranty service. Am still owner of unreliable GPS. Still have about $400 invested in unit plus software and maps. Still kicking myself for buying a Magellan product. Trust my day (much less my life) to this unit? No way. Don't do it. Really -- don't do it.