I have a v519. I have a 7ft MTL bushog for it, a bucket, graple, post hole auger, 3point/pto that allow me to use a seed spreader, tree puller, and a stump grinder.
I've used my v519 for everything I ever did with my 50hp tractor and much much more.
It does not have high flow, but I haven't really missed it (except the stump grinder is slow)
I couldn't do without the bushog, bucket or post hole auger. The grapple follows hard on the heals of those three. The land plane is a distant 5th, and I wish I hadn't wasted money on the other implements.
Service is important. I looked at the JCB teleskid, which is very nice and has high flows. But it was ~10,000$ more, didn't lift as much or as high, and I'm guessing tracks are a good deal more expensive than tires.
Your needs may differ than mine, but I bet you won't be disappointed with a v519.