An excellent grapple plus use of rear remotes can be set up on any DK for just over $1000. Anyone looking to add a grapple should understand that more money invested really does not give you any more functionality.
A simple 48 inch single upper arm grapple will, paradoxically, lift more than any larger or more expensive grapple. Period. Why spend more? They can be purchased and delivered for just about $1000 or less. Everyone loves whichever grapple they purchase so why not save some bucks to spend on other implements. Spending much more on a grapple without a very clear rationale is just throwing money away. No newbie or first time grappme owner should spend more as by definition you would not have the experience to know that you are one of the 5% who might benefit from a more expensive grapple type.
Everyone adding a grapple to a DK, which already has at least one set of rear remotes, should just try using the rear remotes to control the grapple before investing in a diverter valve or electric over hydraulic. Seriously, if you can drive a 4 on the floor transmission then you can operate a grapple as easily as with a button on a joystick. I am one of the few who have used both the joystick button and the rear remote lever to control a grapple so I am speaking from experience. Do not get bamboozled by glitz. If you use the rear remotes, which will cost you about $100 for hoses, fittings and zipties, and will take even a tractor newbie about 30 minutes to set up. If you find you want a joystick button system then the fittings and even the hoses are reusable. No one who doesn't know they need a diverter or electric over hydraulic should buy one of those $1000 plus cost options should do so without giving the rear remotes a try.
So, spend about $1100 or less and join the hoards of happy grapple owners or spend two or three times as much to join the same club. Your call.