I've had mine over 13 years now, can't recall the brand of it, doubt they are even in business anymore. I know at the time I had to wait for it to be special built for me.
It depends on how and for what your going to use it. I've got mine on the largest New Holland rubber tired skid steer they make, thinking mine weights over 1000 lbs.
At the time the electric companies were buying the same grapple I've got and putting them on the largest tracked skid steers and were not tearing them up any.
I've been around over a dozen other brands and they all had major issues in my opinion.
I'd prefer two independent grapples with the fingers on the bottom much like the rock buckets have, think mine are 1/2 inch thick and have two steel shafts that run through them to hold them apart, thinking inch and a quarter shafts one near the front a few inches back and the other mid way back and an angle iron for a back bottom and tubing for the back top.
I'd prefer bushings and grease zerks for the pivots myself.
I'd specify my own tine spacing for my own needs. My clamps are made out of thick steel but they used heavy walled tubing instead of solid steel shafting for the back and top pivot portion of the clamps, we've bent them somewhat, solid steel would never have bent.
I've used mine mainly for land clearing and log handling, works good for brush as well, loaded a lot of shot rock out of quarries with it too.
I was thinking back at the time I paid over 3500 for it. Hoses are the main issue we've had with it over the years. Had to beef up the cylinder mounting points a few times, but we've handled a lot of large logs with it over the years, with some cowboy operators in the seat.