I mostly read three magazines: Amiga Magazin (German), Amiga Magazine (Dutch, bimonthly issues) and Amiga Shopper (English).
I really disliked most English or American Amiga magazines (the same goes for C64/128 magazines, for that matter), as I found most of them focussing far to much on the gaming side of the Amiga (or the C64 before that) and often ignoring the rest.
I liked German computer magazines (still do), having a good mix of hardware- and softwaretests, programming, hardware hacking, articles for both beginners and insiders. Most Dutch magazines relating to the C64 or the Amiga were utter crap, apart for Amiga Magazine, a (still) highly readable magazine.
Atm, I have all issues of Amiga Magazin (Dutch), quite some issues of Amiga Magazin (German), but unfortunately only a couple of issues of Amiga Shopper. Hope to find more somewhere in the not to distant future.