I prefer butyl tape. It's easier to work with, I think it seals better for its purpose. That said, If you do the install properly, you shouldn't even need it. I Leave it out completely when doing repairs on personal property with non critical areas and I have yet to have a panel so much as seep during the windiest and heaviest storms. I don't recommend that, of course. Sealant is a backup. Neither product should degrade to a degree as to fail over the life of that panel, assuming it's not exposed to UV.
If you had ever disassembled a panel with caulk or tape, you wouldn't be worried about how it holds up. Lol.
Most leaks I see aren't from seams. They are from not following manufacturer spec on fastening and/or driving the fastener in with an impact that smashes and destroys the rubber seal like they are trying to anchor the Titanic to a dock. It's a panel. Today's fasteners are pretty forgiving on this, so just be cool with the impact and you're gonna be fine.