Just got the underfolder version, on the recommendation of a friend.
Not familiar with the unit very much in depth, but it looks hella cool. Thought I would lean towards fixed stock (which is sold out rn), but after reading enough of the posts here, figure there's enough who like the underfolder (and I'd rather not miss the boat once they sell out of everything, so decided to pull the pin and go for it.
wrap the buttpad or it could damage the wood handguard if folded aggressively like I did