I was really big into Mervin Boards and still have a couple in my quiver. The only one I really ride anymore is an old 151 Rider's Choice.
My reasoning is based on board weight, most of these boards feel like stiff tanks (at least the ones I own). When I jump on something else, I have more pop, mobility all in all and a better ride. I was sold on Mervin boards initially wanting a quiver killer to shred through Ice, and the deep stuff. A properly maintained board with a skilled rider will do the same.
As far as the Boards not having fully wrapped edges, not a HUGE deal to me, I have had to file/sand noses and tails and do a little epoxy work here and there. No big deal
All and all I think there is so much Mervin hate because a lot of people think it's the end all be all board, IMO it's not....... I ride everything in my quiver more than my Mervin's.
That being said I have a 2013" 153 Attack Banana with 2 RUNS! RUNS! on it.... (happy to sell

) put it back in the car and jumped on a lighter forum park board.