1 More info.

2 The "Default" File As is "Last, First". It's only with Company contacts
that I use the File As drop down to select the different format.
I have noticed that once I select Acme Ltd (Doe, John) [ie the one with a
space after the Company and  before the bracket] and then Save-Close, when I
open it up again, go to the File As, the version without the space is no
longer there.
I have not been able to established what sequence of events is changing the
contacts info such that the File As is being changed. I'm not changing it
unless it is to change it back to the layout with the space befoe the bracket.

3 Creating them on either of the PCs using "New Contact" then relying on the
Ipaq to sync the new contact to the other PC. (Note this problem happens to
any "Company" contact no matter old)

4 I get File As to display differently by using its drop down.

I think you may suggest changing the default to Company (Last, First) but
roughly 60% are Last, First  20% Last, First, (Company) and 20% Company,
(Last, First)

?
Jonathon