Originally Posted by EmeraldOne
Which implies that the big 3 are likely both more accurate and easier to use...
Indeed. I've seen some reviews that keep indicating that the Garmin/Magellan/TomTom solutions are consistently better at the user interface and routing.
Now, in what little I've dinked with my Harmon 730N, the user interface is decent. I wish the map looked as clean as the ones on TomTom and Garmin unites. The routing (in the one trip I've used it for) is decent. The interface isn't bad; really no worse than the TomToms I've owned. I do like how it puts the directions in the EVIC, but the lack of lane assist and 3D junction view is a detriment- not a huge one, but it is a concern. I have used that feature before, and it does really come in handy when approaching confusing and congested interchanges. I'll be fine (since I know how to actually read a SIGN), but you do lose a touch of confidence when approaching these interchanges.
At this point, though, the RER is pretty well a nonissue, since it cannot be ordered. If you have the RER, you're stuck with it. If you order now, you're getting the 430N RHB. Before too long the 730N will be the RHR, and it's anybody's guess how they will revise the interface.
I do wonder if the software of the RER will be upgradeable to the RHR spec; the engineer chat indicated it might well be. Naturally, a software upgrade won't get you a center console USB plug (be a heck of a service pack if it could...), but a full OS upgrade to match the features would be nice. If so, count me in.