On road the 200 is fine for following a route, you cna see when there’s a turn coming up and match it with junctions without much bother, and on the rare occasion you miss a subtle split it beeps at you to say you’ve gone wrong, normally within a 5-10 seconds of your error too so not bad.
But offroad it can be trickier, doable on big wide tracks and fire roads where any turn is obvious, and ok on well defined singletrack, but anything with multiple route options or vague moorland and it can be a bit trickier so something with a bigger screen and actual mapping is better, be that bigger GPS, smart-phone or a paper map.