I found the books enjoyable, they're good techno thrillers and page turners like the Ramez Naam ones or Crichton's books but I think putting them into the top 20 is a little bit too much. Just taking a look at your list, Butler and Lem and Ted Chiang are on a different level.

I've recently been re-reading Daemon, and I find that it's very dated to the Windows XP era. As for Freedom(TM), I think it goes too far with its extrapolations from then-current technology. To name just one example, speech recognition and human-sounding speech synthesis were nowhere near as good as they were portrayed in that book.

Funny you should bring up "Daemon", I just tried to read it. If anything, I found the writing focussed too much on accurate details at the expense of good storytelling. As the plot was no secret, and the concept fairly trivial, I gave up pretty quickly.

Just read it off your recommendation here. It's not a hard scifi unless you'd think Transformers also are. Some really far fetched sysadmin fiction.

Suarez used to be a tech/security consultant... the title is a direct reference to system daemons :)