WFMU gets my love. They're strictly non-commercial, in that they take no corporate "sponsorships" whatsoever. It's amazing what a difference that makes, in terms of air time otherwise lost to blather. (Some of the DJ's make up for that with their own blather, of course, but even when it's tedious, it's usually better than sponsor copy.)
I like WORT in principle, but I rarely find the offerings compelling. I dunno.