Which 286 version of UNIX to buy?

[Mike]

I am wanting to run UNIX or some flavor of it on a 286 based PC.  I will
have an occasional second user.  Also I would like to be able to run
an occasional DOS application like Dbase or Word Perfect.  I would
appreciate any comments or opinions about the different versions of
UNIX that are available.

Also, please comment on system requirements such as amount of memory
required and size of disk needed, etc...

Thanks