Well I had and still have a number of them, eMap, GPS V, Streetpilot III, Streetpilot 2610, 2620, 2650 2730, Quest, eTrex Venture Cx, GPS 10 Bluetooth pug for the many cars in the whole family.

The Streetpilot 26xx/27xx are great for cars but a little to much for traveling. The Quest has long battery life but small map memory. The latest is a eTrex Venture Cx. It is perfect for traveling since it has 30 hour+ battery life, Micro SD card map memory, auto routing, and compact size. It had recorded many flight paths in the air, finding a house in Japan, occasional use in a rental car.

So far no Nuvi yet, primarily due to the short battery life.