This is going to seem a bit 'bah humbug' but needs saying.
Sadly the dynamics of journalism when related to testing products of any kind rather deny any objective quality at all. To this end I don't buy any newspapers or magazines, period. I speak from experience as professionally I've written a fair number or pieces for industry journals over more than 30 years and entertained numerous editors and journalists for lunch in that time, for ease of reading I'll bullet the facts:
1) Few journalists are genuine experts in the subjects they write about, it's better to think of most of them as 'contract writers' who will research a topic or regurgitate manufacturers PR material (copy written for this very purpose). Around the time the SQ was announced your may recall that there were numerous articles that all said the same thing using the same words though apparently produced by different people. Easy money....
2) The greater majority of journalists, in my experience, are freelancers paid by the column-centimeter published or commissioned to write a specific piece. I've written dozens of articles that have been published with someones name in the title other than mine. I was working with a journalist a couple of years ago on a manufacturing article, he also wrote for a green energy journal and a gardening magazine so was he an expert on all three topics? No, and he didn't claim to be either it's simply a job to him.
3) So if you are journo' trying to earn a crust to feed your family and pay the mortgage are you really going to spend a week properly testing an Audi or RR product and then write a balanced and objective article? Its more likely that you will produce something innocuous and readable that will offend neither manufacturer and ensure that their Press fleet department will invite you to the next jolly and not add you to the blacklist of 'unfriendly' journalists whilst awaiting acceptance of your pieces and some money into the bank account.
So are most magazines worth buying/reading? No, not really - just look at the pictures and don't bother with the words and then figure that the pages are content-light and vehicles for advertising...it's a shame they don't print them on toilet tissue isn't it?