i was looking through www.polyperformance.com and noticed the two different orbitals. i dont know much about hydraulic steering but plan on running it on my trail rig. the Charlynn orbital is 85$ more than the parker one. what are the differences? Im planning on using a single ended 2x8 tractor supply ram unless i can find a sweat deal on something better. if anyone can shed some knowledge on all of this it would be much appreciated.