Sadly, here in South Africa, neither publication is available at the newsagents, although they were up until a couple of years ago. By that stage, they were grossly overpriced - several times more than the UK cover price - so I only bought them occasionally.
I started buying the Model Boats magazine monthly in the early 70s through to the late 80s and still have them all!
I would love to subscribe to one or the other, but it's not a viable option financially, given the high postal rates and our poor exchange rate.
In my humble opinion, they are both excellent publications and I envy you lucky folk in the UK!
Regards, Glyn :'(