Suppose you have a product.  Suppose it will be released within 6
months.  Suppose you want it to be embedded-ish -- that is, you don't
want normal users mucking with the system binaries, but only to use
your config tool.

It will probably run on x86, but it might run on an ARM.

It needs threads.  I know NetBSD is working on that, but it isn't
quite there yet.  But I'm working on that, and I hope it'll be there
before too much longer.

Now, suppose you want to use a free Unix.  Can anyone give real life,
honest, unbiased opinions on:

Should NetBSD be used?

Should FreeBSD be used?

Should OpenBSD be used?

Should Linux be used?