Garmin Zummo 350 vs TomTom Rider V5

[mtread]

I'm Tomtom Rider 2 all the way. My mate's Garmin regularly re-boots itself on the road. I look at Tomtoms as Yamaha and Garmin as BMW.
One is good value reliable machinery, the other is  overpriced, overated and temperamental  :rollin
To answer some of the misunderstandings:

Garmins have mapsource/basecamp to plan your routes on the PC, don't think tomtom has that feature.

You just use the free verion of Tyre - no problem

Tomtom mounts are famously bad, heard lots of stories of it flying down the road but that was a few years ago, maybe the issue has been resolved.

Never. Solid as a rock. Jiggling about, the Rider 1 used to wear down the mounting contacts, but improved from Rider 2 onwards.

Neither have a stereo built in, I like music on long trips.

With a decent Bluetooth receiver you can overlay both, streaming music from a smart phone etc.