It must be really hard to produce an aviation magazine every month - there just isn't that much to write about. I subscribe to Flying ($12/yr!) and also get the AOPA mag - they make a nice 30 minute distraction when I get home from work. I generally pick up one of the UK mags when I'm there, and sometimes the French ones also. But what do you write? Comparing with a car mag, there are always new cars coming out, and zillions of classic cars to write about. How often does a new aircraft appear on the market? People are still salivating over the SR20/22, which is now 15 years old. You can guarantee that around NOvember there'll be an article about winter flying, then icing in December, getting current again after a long break in March, density altitude in July (not in the UK of course!), and so on.
There's actually a lot going on in the GA world in the US right now - lots of new gadgets (iPad etc), the change to ADS-B, unleaded fuel... but it tends to happen at a glacial pace for a monthly magazine.
The UK is even harder - much smaller community, totally unsupportive environment.
Flying isn't THAT bad. The emphasis on turbine aircraft is a bit annoying, but it's just like the car mags writing about Ferraris - it's interesting even if you can't afford one. Peter Garrison is good. The unspeakable Dick Karl ("poor me, I can't afford a jet") remains as unspeakable as ever, but you don't HAVE to read his stuff.
Just my 2p...