Cool. Then I'll take the one that doesn't flip please.
Except they don't exist. You are talking about a tiny rubber raft being launched into a giant sea. The mother ship has already succumbed to the extreme conditions. Breaking 30 ft waves will flip any raft. This is one of the main reasons you never want to leave the mothership until absolutely mandatory.
Either way, I think I'm done with the subject. The argument is just getting silly. Sure, if I could get a reasonably priced, reasonable weight, reasonable size, easy to launch NOT Flippable liferaft, I'd select it over another one. They don't exist for the conditions that they have to work in.