Sat nav advice

Has anyone any experience with the camper version of sat nav Preferably garmin as that's what I'm used to. The one I have was faultless in France and Germany, but met its match in Donegal and Galway. Tried bringing me down every L road it could find. I might be imagining it, but I think she was getting quite irritated with me when I didnt
I don't mind spending the money if it works reasonably well but don't want to waste almost €400 on an ornament
Thanks
Dave

That's what I was afraid of. Hardly seems worth it then

I'd have to agree with you there. When garmin went dolally in Donegal, google maps worked much better. Maybe google should bring out a sat nav as it does drain phone battery

Aye. Though done that with iPhone 6 in France a couple of years ago and it got very hot. Nervous of doing it since. New iPhone a lot dearer than a sat nav

After doing the bones of 800 miles in france last month, the co-pilot opted to use google maps instead of the map, because it highlighted attractions and places of interest while enroute. The results was largely positive, especially on a spaghetti motorway junction and navigating town centres.
However arrival times need to be adjusted by 20%, since a MH is about 20% slower than a car. The google maps also throw a curve ball on some occasions.
We were travelling from Saumur towards Tours along the Loire river when google maps directed over the Montsoreau bridge. The best way to describe the bridge is to compare it to a 18th century rail bridge made out of 3 inch angle iron and the road lanes were just 8 foot wide. The bridge lenght was 1 km. I had no option but to go for it while my dear co-pilot highlighting the amount of broken glass on the road. I was half a stone lighter at the other side. Fffff google maps.
Google maps also failed us by directing us onto 3500 kg limited roads in france of which they are lots. While our MH is rated under 3500kg, it can be debatable at times as to what our weight is because some people in our household see the 3500kg limit as a target to exceed.
I am keeping an eye on this thread because if going to Europe again, I feel the need to aquire some sort of a sat nav that allows for MH size and weighs

I have contacted a mate of mine who runs a truck haulage business on the merits of a LGV/HGV sat nav. He is checking out which model is better but he reckons that truck type sat nav have an annual charge on the map uploads since road routes for trucks change each year. Currently my mates haulage business is moving from predetermined routes to one of fexible route planning within Dublin. I will be talking to him in a few weeks and I'll find out which sat nav works for him.