There aren't that many professional Amiga magazines left, I am currently subscribed to Total Amiga Magazine, this because of their exclusive in depth interviews, reviews and tutorials. But like you said for the latest news the online efforts are more than sufficient, professional quality articles are however very rare.
Last month I received the last issue of Total Amiga though as its operations is being taken over by long running Amiga Future, which was previously German only (the real Amiga Plus spin-off, although afterwards another unrelated German mag has been re-named AmigaPlus). BTW the longest running still alive Amiga magazine must be Amiga Magazin, which started publishing since 1986.
4 best:
http://www.amigafuture.de (English, German)
http://www.amiga-magazin.de (German)
http://amigapower.free.fr/ (French)
http://www.bitplane.it/ (Italian)
