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We can almost see the ad copy right now: "A 4.3-inch GPS for the price of a 3.5-inch unit!" So what compromises have been foisted upon the A430 to achieve this?
The beige-grey screen bezel and dimpled edging had us thinking that the A430 was a rugged go anywhere device. Thankfully common sense took hold and we resisted our primeval urges to drown it in a bucket of water. False pretences aside and given its station in life, it's quite an attractive little number.
Along the top there's a multifunction on/off/reset slide switch and that's pretty much it for the physical controls. Everything else is controlled via the 4.3-inch touchscreen. The interface, with its blue hues and friendly layout, is practically a straight lift from last year's range and earlier Navman models, with visual upgrades limited to smoothed out fonts. The map screen is not overly cluttered with buttons and info, and the map itself is neat, legible and bright, with directions easy to discern.
Destination entry is slowed down somewhat by the predictive text feature that's constantly working in the background, sorting through all the possible streets. At first blush, the enabled-by-default "speak keyboard letters" is annoying to a fault, but with a bit of use we discovered that it was entirely necessary otherwise we just wouldn't know whether the letter we'd just pawed has been registered.
Also keep in mind that certain popular street names, such as George, return more entries than can be displayed in the Mio's results window, so you'll need to restrict searches to a suburb or, in the case of capital city CBDs, a postcode.
The windscreen mount is practically the same unit that's been used in Navmans and Mios for the last few years. It's suitably compact, allowing the whole device to fit neatly in all but the tiniest of gloveboxes, and won't leave its place on the glass without a good fight.