Get a Garmin, I like the new 5in Nuvi the bigger screens are so much nicer.
You can get them with lifetime map and traffic updates now too.
I'm playing with a 1490T I borrowed from my uncle, compared to my old 340 its pretty nice and smart. IMHO its better than the GPS's they put in the new Mercedes since its not German it doesn't want to always take me to Warsaw!
I'm thinking about replacing my old 340 with a new voice command one this year.
https://buy.garmin.com/shop/shop.do?cID=134&pID=87052
Being able to add addresses in without having to take my hands off the wheel or look at it to much is a very nice feature.