I paid £25 (using tesco clubcard points) for the OS digital maps in August I have to confess I haven't used them much yet. It is supposedly quite heavy on phone battery use, so bear that in mind.
I've just started subscribing as well, I got the 3 issues for £5 deal and then £19 every 6 months. I didn't need to fitness tracker as I have a fitbit already, so it seemed the best option for me. I have the OS map subscription which I'll start to use when mine runs out.
I like the routecards, I pull them out and put them in a folder to browse through on a rainy day....!
I'm doing the 1000 mile challenge as well - how's it going for you? Are you in the Facebook group? It gets a bit busy in there!