Roam user of about a year (upgraded from Elemnt) and used daily on tour for three months.
I'd say to anyone to think long and hard about how they want to use it before choosing the model or brand. They are not all the same.
I have the rerouting capability switched off on my Roam. I like to go off course and it annoys me. It will still offer to navigate me to the start of a route, though. Handy.
I fail to see any significant advantage in a colour screen. It's nice, not necessary. For me. Mind you, the Roam has a bigger screen than the Bolt.
I do not use turn by turn (since I like to wander the last ignored instruction stays on screen).
I tested the unit's own navigation in a big city and was quite impressed.
However, other than rerouting, taking me to the start of route or navigating to a "saved location" (all prepared in advance) actual route creation on the unit is difficult. You can use a "target" to identify a place on the screen (beyond frustrating) or you can use the app (beyond terrible).
Far better to use a dedicated planner.
The "saved locations" is a great thing. I use mine to mark "home" wherever that may be allowing me to wander where I will, select it and the unit creates a route home.
I use it to mark off possible stealth camping spots/accommodation or any other thing I may want to return to.
Visiting a city and travelling on foot or car? Save the places you want to return to on the bike.
This can be done on the unit or app, but the app needs the unit on. Dumb. I just use the unit.
I like the ability to personalise the screens. I use about 5 but the main one is just the map with temperature and speed. The other pages have everything else I might need to check but not under my nose every time I look down.
Battery life is great. I'll typically get three touring days out of one charge.
I have seen increasing complaints about customer service and I know some updates are just fixing the last updates.
I can't complain.
When my Elemnt battery started to fail I was offered a Bolt or Roam at a reasonably reduced price. I would have taken a Bolt but Covid meant they were out of stock.
Last week the connection thingy on the back of the unit broke off. 36 hours later l had a solution I was happy with ( I'm travelling and normal service won't work). I can't fault them. Unlike Thetmarest/Cascade Designs.
I'll be using it for day rides and also for touring. I need to be able to plan routes on my phone while touring as I won't have a computer with me.
I've been planning routes on my phone for a while now.
I'm sure that some on here are sick of me mentioning this but Osmand is a fantastic app for the bike tourer. Ironically, not because of its wonderful routes (they're not!) but because it works offline, can create a gpx file that can be used on the unit.
It plays well with a lot of other apps and things like campgrounds can easily be saved.
It's elevation profiles are useful too and all offline.
I wouldn't trust Komoot to direct me to the bathroom. It has let me down in out of the way places and tried to kill me in cities. It is not the easiest to use on a phone either. The PC interface is far superior.
Cycle.travel all the way for me.
Just remember that the one time you might need to plan a route most (pouring rain) is the most difficult on a phone!
One of the greatest uses of my wahoo unit has been the recording of daily rides.
I upload it to Strava, throw in whatever photos I want from the day and have a permanent momento for me or to share.
I have never used my units for anything other than navigation and recording so I can't comment on external sensors and the like.
I can think of maybe two times that the Roam hasn't functioned properly on the road and I lost the data. It pretty much just works.