Garmin 550t or DeLorme PN-40?

[Whittail 161]

First time post. Bare with me. I am looking to get a new gps. I am looking at the Garmin 550t or the DeLorme PN-40. The Garmin is more money then the DeLorme. Do not know if the Garmin is worth the extra cash? Need a little help. Thanks!