which version of red hat is needed?

Hi all,
        i am thinking of using red hat 8.0 as a mail server. which version
is better? personal or prefessional? i have the personal edition but what is
the main difference between the 2? the mail server will be a live server
storing and sending emails...it is used for around 100 users..not a big
scale server..i have 1 rh7.0 running as a mail server just fine internally
but now wishing to upgrade  to a new server and also on a latest version

Regards,
Daniel Tan
67469188 Ext.665
DID: 68430665
MIS Department
Shop N Save Pte Ltd
: [email protected]

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