I just got a Garmin Instinct 3 Solar. It does mapping, and cost me about $300 US.
You're right that it's slow due to a wimpy processor. But the processor isn't because they're too lazy to innovate, but because they have something sipping tiny amounts of power so that I can get a battery life of several weeks.
As a sibling commenter said, the Instinct 3 Solar only does breadcrumb navigation, it doesn't do topographic maps on the watch (there are some Connect IQ apps that can add mapping, but you don't get good integration with workouts).
I use them all the time when cycling. I often plan a route, but when some different direction looks more interesting, I can spot check whether it leads to bike paths that will eventually merge back into my grand plan, erm, route. Or sometimes even for following the route, you want to look ahead by quickly zooming out or get a lot of detail at some complex intersection, where having a full map gives you much better orientation.
Well, except on a Garmin, my Fenix 8 is often so slow that I had to pause cycling to zoom in/out (even more complicated by not being able to do gradual zooming because it does not have a crown).
Yes, I know I can also use a bike GPS or a more generic GPSr with a large screen. I have used their gpsmap line since 2010 or so and even have the gpsmap H1. But having to always carry it around when you have a break somewhere is a drag and I always have a watch on me anyway. So I primarily use the gpsmap for geocaching and switched to using a watch for other activities.
but because they have something sipping tiny amounts of power so that I can get a battery life of several weeks
Coros watches have several weeks of battery life and fast maps. It is laziness (or margin maximization), because they could reach the same power budget by moving to a processor that is on a smaller node.
Their bike computers have a long lasting battery and are helpful for data. But wow are they frustrating. Software update regularly loses the config, the interface is just so painful (laggy touch screen or confusing buttons). The mapping is hard to follow.
Not that Strava mapping on a phone is any better. Why can’t Strava put arrows on the direction of travel?
This has been an issue across the whole Garmin product line. E.g. the Garmin eTrex 32x from 2019 still used the same CPU as the eTrex 30 from 2011. 8 years without a CPU update. And the eTrex was already had miserably slow map rendering in 2011 with maps from that year.
I see people riding bikes worth tens of thousands regularly. They should try a top tier models and see what happens.
I don't know if there are top tier models that run on replaceable batteries you can get at any gas station.
The funniest thing is that earlier versions of the Coros even used the Garmin map format (though as many small files and not a single/small number of .img). Though they have switched to the open PMTiles format in later versions.
BTW, I had a Fenix 7x solar (before a Fenix 8 AMOLED) and it would usually 'only' last about two weeks. I think you can only reach Garmin's stated time if you disable a lot of functionality.
Garmin gets almost 30% more battery life in exchange of not being as fast (30 days)
> I think you can only reach Garmin's stated time if you disable a lot of functionality.
Turning off always-on Pulse ox gets you there. Turning everything off except telling time gets you 2.5x the battery life (69-71 days)
However, my understanding is that Coros just doesn't have an SDK. At all. So it's not really "lagging on features", it's a totally closed platform, that doesn't any have 3rd party apps at all, and will not have them, because it's impossible to write them. I don't know if it's enough of a reason to completely write them off as a competitor, but that does give me a pause. I mean, if I don't have a feature on Garmin, I can theoretically implement it myself, or even hope that somebody else did. If I don't have it on Coros, I will just have to make do.
As a motorcyclist and sailor, their hardware is second to none in terms of build quality and robustness. The ability to look down at my Zumo GPS on my motorcycle in a rain storm on a dirt road and have it respond to my wet dirty glove is a close to magic as you will get.
Then there's the watches, the Instinct range is ok but I have a button that doesn't pop back out, my wife's vivoactive suffered the well known touch failure.
However, as a UXer I will say that across all products the software interaction model sucks balls. "China" can and will produce hardware to meet a price point, its not that they can't build good products.
As soon as "China" figures out how to do good UX, the last moat western companies have will fall.
I don't know about UX, but I've had my Coros watch for a few weeks now and I didn't find it hard to understand. I think it's much easier than when I first learned to use a Fenix watch. It misses some Garmin features though that I'd really like to see like off-course rerouting. But like I said above, they have been adding features at a good pace and a drastically undercutting Garmin on price (most watches less than half the price of the closest Garmin watch).