Does anyone have any tips on configuring the QOS policy and Firewall interface QOS settings for prioritizing voice/video traffic (h323, sip)?

Ideally want to have a policy which matches what we are doing with cpqos on VSX. Please advise by using LLQ or Diffserv.

cpqos class add Diamond type llq prio 1 dscp 46
cpqos class add Platinum type llq prio 2 dscp 34
cpqos class add Gold type reg prio 3 weight 100 dscp 26
cpqos class add Bronze type reg prio 4 weight 200 dscp default