The 1450 is an excellent unit, but it brings only incremental changes to the nuvi line. At 0.6”, it is (along with the nuvi 12xx and 13xx series) the thinnest GPS on the market. The luxurious 5” screen is very nice, but a 4.3” screen is more than adequate for most folks.
Many of the 1450’s features are also found on the nuvi 7×5 series. As a result, I can’t see what’s going to drive sales, unless you are interested in the pedestrian navigation features.