Are you wanting to drop some major cash on a complete kit or piece it together?
You could piece a kit together for around $300 by purchasing parts from a hydraulic supplier.
Thats the way i would go whether it be full hydro or hydro assist, plus if you break something by smashing it or from trail abuse you can easily replace it.
You could set up a hydro assist for around $200-250, add another $100-150 for a pump for full hydro.