GUD is the best one out there. I love their response time. They've rejected everything I've ever submitted to them, but the longest they ever took to get back to me was, I think, 4 days. There's nothing more irritating than waiting three months to hear "not what we're looking for." That's also how you know only the best stuff makes it into the magazine.
I usually read everything I can get my hands on. . .GUD, Sam's Dot Publishing's listings, ASIM, Dreams and Nightmares, Star*line, Mindflights and all they have going, Asimov's, Analog. . .
I am reading something strange. Match pretty well with the music of Sepultura and the band Chico Science with Zombie Nation. If you want to see: www.murkydepths.com. Strange and diferent.
I read Interzone, Murky Depths, GUD, Jupiter SF, Black Static, Hub, Futurismic and occasionally Realms of Fantasy. Murky Depths is one of the more interesting at the moment having burst from nowhere around the middle of last year with what seems like a high production value.
And of course Interzone continues to do good stuff. To be honest they're all interesting; they just seem to struggle with distribution.
Big echoes here on Interzone (+ Black Static, Crimewave and all the TTA's...), Withersin, Murky Depths (can't speak of them too highly), Coyote Wild, Hub sometimes, Aeon, Helix SF, Albedo-One, and just about anything of that stripe. There are so many good ones out there, but, as has been stated in this thread, distro is hard. Aside from the ones I mentioned, in general I look for the weird hole-in-the-wall dive bars of the magazine/'zine venue, myself, the kind that have hung on for years on luck, donations and vodou. There's no shortage.
It'd be interesting to know how many of these magazines actually have distributions deals. Murky Depths were offered one in the UK but were asked for £5,000 up front, £5,000 for the first issue and £3,000 for subsequent issues. Talk about minimising the risk! And Diamond turned them down with "the format doesn't really fit out market" and to only bother trying again if "changes in format, appearance or content" are made. Little wonder new and enterprising print publications rarely see the light of day and why the internet lures the new "publishers". But then, Murky Depths has a niche off its own that people find impossible to pigeonwhole.
From what I've heard of Diamond, Murky Depths wouldn't really have been well off if they'd been accepted. GUD's not got enough of a profit margin to afford Ingram or a number of smaller distributors we've looked into. We're in a couple of stores directly, still trying to find some middle ground. Open to suggestions. ;) :)
I don't read Analog & F&SF as much as I used to, though I still do subscribe to Asimov's. However, I understand the readership of these magazines is in slow, but steady decline, and I wonder if the impetus is toward predictable fiction that entertains rather than challenges in order to keep numbers up. Of the online set, I think Ideomancer is often interesting, but I don't read Strange Horizons much, tends to be too arty/slipstream for my taste. I do buy the annual Dozois anthology, if only to keep up, and I think Murky Depths is doing some fascinating work with the marriage of graphics and story.
I've been reading GUD Magazine lately, and often forget to move onto my other 'regulars'. I thought about submitting to them, but if they're printing JK Rowling, I'll keep my work at home a while until I actually have more than a snowball's chance.
Spent easter weekend at EasterCon - Heathrow Radisson - I must say I bought some editions of Murky Depths and it's a fantastic read. I was so impressed I've subbed some genre poetry. It's full of terrific stories, poems and fabulous artwork for those of you interested in it. Issue #4 will possibly be including my latest poem - so look out for it. Murky depths link www.murkydepths.com my link www.paiganstone.co.uk