Pros: Screen is easy to view, and voice directions are easy to understand, though it tends to get drowned out in heavy/noisy traffic, even with the volume setting at maximum.
Cons: User interface is tricky at times; battery life is short; battery cannot be replaced, easily (there's a big rigamarole you can go through to do so (see summary), but, if you only use it while plugged into your car lighter, then there's no problem).
Summary: I bought this because me and my wife were used to the C220 model which worked great for over 3 years until it died few months ago. Everything is good in this low cost (mine was $80) GPS, it's even hackable and you can replace the existing 900k POI with 12 million; except that it crashes a lot. some people say it's because of too many recalc, some say the heating problem.
Summary: Reasonable value for the price, but it does have its shortcomings. Example:Rather than stay on a particular street, directs me to take 2 turns, which puts me right back on the street. No obvious reason for this! Biggest complaint is the POOR QUALITY OF CUSTOMER SERVICE. Repeated requests for a printed manual (for which I indicated I was willing to pay for!)resulted in grudging assurances BUT NO MANUAL.
Summary: The Mio c230 is a great GPS device but it has a one major flaw. It uses maps that are old and out-dated. While no GPS device is perfect this works pretty well once you get used to the old map - New road contruction has elimated the "detours" or routes this unit takes you on. Voice guidance is better than my wife's Garmin and although its maps are newer it can also take you on some unual routes that will take you in circles if you don't know where you are going.
Summary: This unit performs well in terms of accuracy - I dialed in corrdinates to a place out in the middle of nowhere and it got me within 10 feet. Despite its smallish size, the display is bright and easy to read; the "night mode" inverts the colors for easier viewing at night. There are also many different ways the unit can display maps, zooming in, out, different angles, even 3-D modes. The c230 Locks in after less than a minute.
Summary: I had to send it back. Saved POIs came up with changed numbers three-quarters of the time(e.g., I input "3001 Hwy 7" and find "3119 Hwy 7" when I look at the POI). Tech support was good - less than a day to answer email, and quick when I called, but they suggested I reinstall the software, and I found that the unit would not be recognized by my PC. Or any other PC. (The unit would charge from a USB cord, but would not connect.