Sea to summit hydraulic dry pack 65 or 90L

Has anyone had any experience with a Sea to summit hydraulic dry pack?

From previous experience 65L is a perfect size for a multi day raft expedition but it wont fit in the raft or PFD. I’m trying to decide between getting a 65L pack and strapping the raft/PFD/paddle to at as it has good lug/lash points or getting a 90L an hoping to get the raft in the bag with the gear maybe with just the PFD or paddle strapped to the outside.

They also have a 120L pack but that size is getting absurd, I looked at an NRS 110L and looked like I could fit inside or even turn it into a raft