Nice timing Salamanca, barely 24 hours after I had to lose a molar, thanks for the reminder!
I actually stopped by to leave a Magpie plug but see that I have been beaten to it. It's no secret that there is concern over declining subscriber numbers in these hard times, and although a non-profit making venture, it's no charity either and there's still a need for the guys to cover the costs of this fine publication.
I'd add that you actually get six puzzles monthly, not five (though one of those is numeric). As for the compilers, yes most do set for the Listener, EV, IQ etc too so the same quality prevails. By way of example, this month the prize puzzle is by Shackleton - the compiler responsible for 'Location Location Location' last year, the awesome Morse Code Listener the previous year, and one third of the Mango team who set the Duke Ellington one from just the other week.
And, you CAN try before you buy - take a look at the link below for samples. (but if you download them, do them and find that you enjoy them, please subscribe)
http://www.piemag.com...ublic/sample-puzzles/