Are you tired of replacing the O-Ring, or the quick disconnects?
I have seen very few quick disconnects leak...on tractors or in other military and industrial applications (other then those occasional leaks one reads about on TBN and when they wear out after years of use).
If it's just the O-Ring, I'd suggest you replace the QD (or QD's) that leak in their entirety..male and females ends. If you're not happy with the ones you buy from the Branson dealer, buy an American made QD.
Before you start any disassembly, look over the situation carefully. Those QD's should unscrew from a fitting swaged into the rigid lines and hoses. However, they might be swaged directly into the hoses and rigid lines (to keep manufacturing costs down). If they are swaged into the lines, the work gets quite a bit more complicated. I'm not going to go into that in this post.
If you really want to replace them with a fixed setup (and I don't recommend this...as soon as you do, you'll want to remove the loader!), relieve all pressure from your hydraulic system and unscrew the QD's. Have a bucket and caps or plugs handy to screw onto the fittings that you unscrewed the QD's from. Otherwise, you'll lose all your hydraulic fluid and have a heck of a mess to clean up. Since you probably will spill some fluid, have a bag of Speedy Dry or kitty litter close at hand. It may be advisable to drain all the fluid out of the system to minimize the mess. However, still cap off those lines while everything is disassembled to prevent foreign object from contaminating your system.
Take your QD's to a local hydraulic supply house. I don't know what all you'll need, but it'll probably be a couple male to female connections (or female to male) and a union to tied the loader and tractor lines together.