I have been buying Airliner World since I discovered it at the newsagents at the beginning of this year. I have most of them from February 2001 and I'm keeping them!! I haven't seen Airways yet, but everyone here comments on how good it is and it's their fav. etc so I am looking out for it.
I subscribe to the following aviation magazines:
IFR Pilots Magazine
Plane & Pilot
OAG Flight Guide - North America (Not really a magazine, but an aviation subscription that is yearly)
I occasionally pick up one of the others like Air International or Flying at the newsstand.
I've been getting it since day(or should I say month?) one! Great magazine, even though sometimes I don't think they do a thorough job of editing before publishing. I usually always find some (minor, in most cases) mistakes in each issue. I also collect Key's sister magazine Air International