"Better than CNET rates it"4.5 starson by coast2
Pros: Very fast/sharp screen/auto zoom/good POI interface/size/price
Cons: low volume/screen a little dim/buried volume control
Summary: Maybe CNET's review unit had a defective screen--I've been using a C220 for two weeks and the screen, while not terribly bright, is far from "unreadable" even in daylight. And it is very sharp, so that even the tiny street names that invariably appear on 3.5" GPS screens are easy to read. Inputting addresses is a snap, directions make sense, route calculation and automatic recalculation (if you deviate from the existing route) are very fast. Everything about this device seems "snappy"--it doesn't make you wait for results when you navigate among screens or input information. POI search results are accurate and well organized. The auto zoom feature does a good job of widening and narrowing your point of view at appropriate times, though of course you can turn it off. The form factor is small enough to be truly pocketable.
Dislikes: The screen could be brighter. The sound is a little tinny and maximum volume isn't loud enough for high speed, open-window driving. The only U.S.-English voice is a male one--and with what sounds a little like a Brooklyn accent--I'd prefer a female voice. The volume control takes too many taps to reach. Styling is a little old fashioned.
But, really, considering that this thing is selling now for $180, while competitors with equally up-to-date maps are going for up to twice as much, and considering how well it works, it seems like a bargain. My rating of "9" takes the price into account--I think that reflects the real world, where price does make a difference.