Last week I was driving with my sister and she said, looking at OsmAnd: "What app is this? I don't understand anything on that map!". I think that it takes some time to get used to OsmAnd map style, but it's very clear after you understand it (clearer than Organic Maps, in my opinion).
Yeah Organic Maps is so beatiful! Osmand looks kind of ugly. I am an engineer and Osmand style looks like it’s made by an engineer while Organic Maps looks like it has received the love of some caring designer!
I use Organic Maps for daily use, and OSMAnd for outdoors activities like hiking etc. The added info and features in OSMAnd are indispensable for outdoors use.
I absolutely love CyclOSM. It's great for bike commuting, as it differentiates between separated cycle paths and cycle lanes, shows one-way streets that allow opposite bicycle traffic, good/bad surface quality, 20 and 30 km/h streets and bike stands.
I like the default OSM carto style, however as an everyday map while walking I mostly use Streetcomplete (or sometimes everydoor) as I like the ability to make edits.