Excellent GPS 101 write-up. I can get around on one which is about the extent of my knowledge of a GPS and use a cheap nuvi 755 which was $139 and I assume much like the 1450. The nuvi 755 has been discontinued I believe which is a shame since it had a headphone jack. It always gets us where we are going, takes uploads of custom made routes and is used as a mp3 player. I use one of these to make it waterproof http://www.firstgear-usa.com/Luggage...PSTankBag.html
I guess the 600 to $800 made for motorcycle zumo's are better but someone would have to explain to me why I would need one when for under $200 I'm getting around just fine.