Windows , Mac OS , other?

Its too bad OS/2 is virtually dead, it was quite good the last time I looked. I think it was just too big for the machines of the time. At home I use Win98 for games and Linux for programming. At work I use WinNT4, Solaris, AIX, HPUX, Compaq(DEC) Tru64, OpenVMS, and OS/390. The king of the hill for reliability, stability, and security is OS/390 by far.