I am going to order the parts for my conversions.  I have two rifles and a shotgun.

Do you recommend me spending the extra money for the push button ACE folding mechs or just the ones without the buttons?

I need some input before spending the big bucks for the parts.

I am getting ready to order some myself and I am just going with the standard folding mech.

I have not see the push button one, but the standard one seems just fine on mine.

If I needed one "maybe" I would've gone with the push button.
But because I have bought them in small bunches the "no push button"
have saved me some bucks for other projects...and at the same
time the "no button"are very easy to use (since I only fold for storage and transport, not CQB missions).

I have found that disengaging the latch, when folding to the right,
is a breeze and the wrist motion required is just like the push button.

I fold to the left.  Opening is a breeze, but I have not found a good method for folding yet.