I have had the Garmin Trucker 460 since it came out, approx 6 plus years now I think. It worked well up until about a 2 years ago. Seemed the windshield heat would affect it and the unit freeze up. It got to the point I could not trust it not to die after an hour or so driving. Cool it off and it worked again.
I replaced it with the updated Garmin RV660 LMT the start of this year. This is the 2nd gen RV one from Garmin. It has a 6" screen which is just about right. The 7" screen of the older Garmin RV 760 would seem to maybe be too big. Rand McNalley I think has a 7" RV unit.
This one has a lot of nice features to it. And most all of my prior Garmin know how from the 460 worked on the new unit. However they changed a few things like the auto recalculate message. The old 460 use to talk to me telling me it is recalculating. The RV 660 just does the auto recalculate but does not say anything. I keep waiting for it to talk to me.... I'll get use to it.
Like Hutch said, I never trust the GPS, I use it as a tool to help. Like when a turn off is approaching it counts down the distance which helps when towing and the points of interest use.
Free map updates came with the RV 660, On the trucker 460 from years ago I bought life time maps.
I gave this a lot of thought on if I get another GPS with all the smart phone mapping stuff. The GPS does offer some better signal strength being on satellite where the smart phone can have data issue every now and then. The RV or the Trucker GPS helps with steep grades and lane assist where the smart phones have not yet catch up that I know of.
So far I like the Garmin RV 660 expect for one feature it has that the 460 did not, for some reason in RV mode it will route me different when I get close to camp if it does not know that I can turn my camper around. I flip it in car mode and it will let me drive the way I want to. So it is for sure changing the route based on the length of my truck and camper or that I'm in RV mode. I have not yet figured out how to adjust that feature if it can be adjusted, yet anyway. It does allow a selection to not route down dirt roads, which I have "no dirt roads" selected but all the roads to camps are paved so that should not be the issue I would think.
I will say, the blue tooth hands free for my phone on the RV 660 is very good. In coming calls will come through the GPS great. I have an older truck with no blue tooth in it and for me, this is handy. The older 460 the blue tooth was not that great.
Hope this helps and good luck
Current Sunlines: 2004 T310SR, 2004 T1950, 2004 T2475, 2007 T2499, 2004 T317SR
Prior Sunlines: 2004 T2499 - Fern Blue
2005 Ford F350 Lariat, 6.8L V10 W/ 4.10 rear axle, CC, Short Bed, SRW. Reese HP trunnion bar hitch W/ HP DC
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