Reverse Hyper Machine?

[Schutzhund1]

Is this the machine that the Westside Barbell Club recommends so highly?
I already have a squat rack and I am going to purchase one other piece of leg equipment for my home gym. Would this be a good choice? $299

I was also looking at this

I like the ability to do calf raises with this machine but if I'm already doing some form of squat does this machine really add value? $425

My budget is about $500 so I guess I could get the reverse hyper machine and a seated calf raise like this one

$199

Any suggestions?