I have been a subscriber to MMM for about 5 years now and have found it to be pretty good. People sometimes complain about the number of advertisements but these keep the cost of the magazine down and I find some of them informative.
The team at MMM probably spend a lot of their time trying to come up with ideas for articles that will appeal to motorhomers, but you can't please all the people, all the time.
When it comes to van reviews things are not so good really. I suppose they are in a difficult position as they can't criticise a van too much in case they offend advertisers. I notice that when they have their various van of the year tests there is always an advertisement for that van on the next page.
As a subscriber I get useful discounts for Warner's motorhome shows and some ferry companies and shops.
Altogether, a magazine with something for everyone at a reasonable price if you subscribe.