It's also what the OpenBSD team uses, and has been given a good security audit.

I use emacs for splitting so I don't generally need this feature. Actually most of my screen sessions only have a single window with emacs in it. I use screen mainly to attach and detach sessions.

You might like dtach -- it's a program that just lets you detach/attach sessions. It's simpler than screen, so if that's all you use screen for you might like it.

http://dtach.sourceforge.net/