I have the Garmin Nuvi 255WT. I think it is great. I am not sure on the slow vs. fast comment?? I have it on the Australian Female voice and we call her Sheila. I liked it so much that I have given one to both my daughters. I am from NC - we took it her with us to Yellowstone this past summer and it she performed flawlessly.

"A fanatic is someone who can't change his mind and won't change the subject" Churchill