3rd function kit

Wanting to install 3rd function remote on my Massey Ferguson 1725 TLB to operate a grapple. I stopped my the Massey dealer to see how the hydraulics are installed, The kit that they offer has a manifold block mounted on the cross member up by the bucket, i assume this is because the 1725 does...

I'm getting a 3rd function kit and some attachments and was wondering what is the best coupler to go with? Seems like the flat face couples always come as an option for attachments for some extra $$$. Are they worth the extra money?

Ok. So I've seen a Kioti made 3rd function kit(DKA144) that looks super easy to install (video below) but I haven't found a dealer that sells it. Seems like most are installing the WR Long branded one. Is the WR Long any better? If so where is the best place to buy it?