Ambit 3 peak! Never had any issues with that, super reliable.
I have it in use since 2015 and still use it regularly.
Vertical was meant to replace it, but in my case it does not work at the moment due to sync issue. And there’s the breadcrumb issue which in my case is relevant as well.
With ambit it’s all super easy, you can choose ‚track back‘ and you have the possibility to choose one of your recorded tracks directly on the watch as a new track to navigate.
For whatever reason suunto has decided not to implement these features on vertical, to my surprise i have to admit.
Nonetheless vertical would be a great update, given that some day everything works as it should. Keep the fingers crossed for that!