I need a bike nav solution to escape my usual routes
This makes me think that you are looking for the unit to plan a route?
In my opinion that would be a mistake as no unit is particularly good at planning routes and the bolt itself only has basic route planning through the companion app.
Route planning is best done seperate to the unit.
cycle.travel is the best in my opinion, RWGPS, Komoot, Strava are other options, some free, some subscription and some a one off payment.
A worthy mention is due to Osmand a useful mapping, planning & navigating app.
With any unit I think it's important to have a really good think about what you want it to do and how.
Things like planning at home or on the road?
Technical abilities and integration to other apps (Wahoo is generally regarded as superior)
Map detail required (Bolt has very basic maps, Roam has detailed maps)
Geography? Wahoo include free world maps, Garmin only local.
It's a complicated gps world! Good luck!