Best queue type for VoIP

I have a large amount of magle/queue tree and simple queues set in SFQ queue type. I have 20 Mbps/6Mbps link with some peak hours and the queue is working “fine”.

But, I read about sfq is a queue Stochastic and is not FIFO, my logical said: The VoIP need to be FIFO because the packets must be arranged in sequential order. is right?

What is the best queue type for VoIP (SIP voip)?

Thank you