It's too bad about Ars. It's the same problem, except exacerbated, with Wired-- nowadays there's just the odd good long-form article. Over the last few years almost half of the print magazine has been devoted to progressive issues from a tech angle rather than tech- and the rest revolves around fan-geekery, if that's a word.

Both are owned by Conde Nast...

MIT Technology Review remains superb, however: www.technologyreview.com