What each can be found with research so my bet is your question is something else.
Let's hear that other question.
As it stands your VPN provider will choose which will be used so there's that. For me the irksome truth is not all VPN providers were telling all about their services. For example the entire reason for VPN is to stop Internet tracking.
What good is that if your VPN logs your use?
What's the difference between VPN protocols? (PPTP, L2TP, OPEN VPN)
based on what should be chosen?
thanks in advance