I've been a member of both ACM & IEEE for several decades. As a dinosaur, I much prefer print versions of all their varied pubs to any of the lame digital editions. I come from the academic world, but have been out of it for a long time and still find ACM relevant, especially after their revamp of Communications a couple of years ago. Practitioners? The Kode Vicious column is nearly the worth the price of subscription. I've never been interested in the Digital Library at extra cost, but it's probably worth it to some.
IEEE? Their Computer Society is marginally OK, but only for the Hal Berghel articles, as far as I'm concerned. IEEE Spectrum has become an exercise in suckitude, the bastard child of Wired's graphic design and Popular Science's "in depth" examination of current topics. Tired of this and their pimping life insurance, I've lapsed on IEEE membership and may do so for the Computer Society too in the near future.