I think that it's a toss up between Airliners and Airways-when I can find them.
I have seen airliner world, and while it's ok if you are interested in reading about Yak 40's flying in Botswana, and drooling over a cover story featuring China Southern opening new nonstop service between Guangzhou (sp?) and Bombay, using Vickers Viscounts, that's fine. But that's not exactly my cup of tea. I prefer to read about JetBlue, National, and Midway with an occasional tribute to PSA and AirCal thrown in for a nice well rounded mix.
As for which country puts out the "best" airliner mags, I think that's open to debate and subject to ones personal taste. So don't start spouting off like that. K?