default $ttl

[Fabiola Caceres]

Hi
is there any difference in doing:

$TTL    86400
@       IN      SOA ns1.infi.net. hostmaster.infi.net.
rest of zone file goes here...

------------------
OR

@ 86400 IN      SOA ns1.infi.net. hostmaster.infi.net.
(
        2001051602      ; Serial
        10800           ; Refresh after 3 hours
        3600            ; Retry after 1 hour
        604800          ; Expire after 1 week
        86400           ; Minimum TTL of 1 day
)
        IN      NS      ns1.infi.net.
        IN      NS      ns2.infi.net.
        IN      NS      ns3.infi.net.
        IN      NS      ns4.infi.net.
        IN      A       216.33.107.214
www     IN      CNAME   vh50003.vh5.infi.net.
web     IN      CNAME   vh50003.vh5.infi.net.

please advise. I have read the messages from this mailing list and found
the 2 ways mention above, but I'm not sure if it does the same.TIA

Fabiola