I should expand a bit on my reasons for disliking Garmins and Tomtoms.
Every Garmin I’ve used had a touchscreen that didn’t like to be touched; you had to press on it hard enough to risk knocking it off the mount (or ripping the mount of the dash). And if you miss a turn or decide to avoid a traffic situation that it doesn’t know about, it takes a long enough to re-route that you’ll probably miss the turn on the new route and enter a loop. Panning and zooming on a Garmin is also a bit funky to the point of being practically random.
As for Tomtoms, the ones I’ve tried as recently as last month were kind of like trying to run Win7 on a 386SX. I mean, there are times when it took 5–10 seconds to register a keypress and then a lot longer to actually act on it, assuming it didn’t hang completely. I cannot abide by that! I know it wasn’t a faulty unit or a bad model either; it’s happened with all but one of the Tomtoms I’ve tried/borrowed.
Also, both sometimes have funky ideas about navigation. I am not about to take a left turn through a Jersey barrier, across three lanes of highway traffic, and over the edge of an overpass!
I had a cheap Magellan Roadmate; one of their basic models. Even that thing had quite a few features and was quite intelligent. It never tried to kill me the way the others did; that aforementioned left was replaced by going one block South, three blocks West (bypassing two dead end streets), and then turning right and going under the road I was on. When I pressed a key, the screen changed before I took my finger off. If I “missed” a turn, it’d reroute me before I had even gotten completely through the intersection. And it was great at planning alternate routes with the turn-by-turn “avoid” options; very handy when you live in a city that likes to rip up roads at random.
The Google Navigation app that comes with Android phones isn’t as nice or full-featured as the Magellan, but my Magellan couldn’t make calls, play games, or view movies in HD, so my expectations were lower. It is quick, and it isn’t bad at planning a route, though it isn’t always savvy about traffic conditions and isn’t nearly as good at planning alternate routes, especially due to the lack of the Magellan’s “Avoid Manuever” option.
If I actually wanted to pony up for another GPS instead of just dropping my Droid X in it’s car dock, I would go for another Magellan in a heartbeat. The catch with Magellan is that you don’t get free map updates, but the way I see it, the competition has to throw in the free updates to justify being the same price as a superior unit.