Update or buy new -- McAfee?

I have less than a month left on my McAfee Virusscan (7.03.6) and Firewall
subscription. I note, from their web site, that the annual update for these
is $59.xx.

Doing a little shopping, I also note that PC Connection has the new package
for $52.66.

Any cautions, warnings, tips?
--
Eradicate threes in my NOSPAM address