SMG Appliance 8380 and Traffic Shaper

Hi,

I have 2 symantec Traffic Shapper with old Brightmail Appliance. we have 30K mailboxes and the Spam ratio is 70% in our environment. We have 2 inbound and 2 outbound scanner with Virtual Control center. 

I want to upgrade Brightmail appliance to SMG Appliace 8380. I came to know that with 8380 Appliance we dont need Traffic Shaper because the new SMG 8380 Appliance good enough to manage network & Spam traffic.

Kinldy let me know should i keep Traffic Shaper with the new Appliance 8380 in our environment???

If yes so is there any documnet in which this statement is written that we dont need traffic shapper with the new SMG 8380 Appliance?

Regards,

Sajid