Need GPS recs: iPhone GPS app vs. standalone GPS

[SDGuy]

Unless things have changed, if I recall, most phone-based GPS options rely on downloading maps as needed - if you happen to be without cell coverage, you no longer have maps. For most everyday commuting, this is fine - but if you plan on roadtrips away from civilization, you should bear this in mind.

For standalone GPS units, TomTom & Garmin are really the only names to consider. Lifetime map updates and lifetime traffic are de rigueur. With all the sales going on for the holidays, you should be able to nab one for less than $150 any day of the week, right around $100-$125 if you really dig and shop around...