GPS

[sıɹɐʎ]

Since you are looking for a GPS with traffic service, I suggest you avoid MSN Direct devices (some Garmin and Pioneer units). Microsoft announced today that they will be pulling the plug on MSN direct after 2011, which will mean no more traffic service on those devices. (I'd say odds are good that the remaining inventory will go on sale soon.) GPS units with traffic use FM band (MSN or NAVTEQ) or satellite (XM NavTraffic); you should be fine with NAVTEQ (often called RDS-TMC or just "FM traffic") or the XM traffic units.

I have an in-dash Pioneer (AVIC-U310BT), which I love, but I was very fond of my bargain stand-alone TomTom ONE 130 I had before it. On the more advanced models, the IQ Route seems like a useful feature, particularly if you want a GPS to shorten your trips.