No problem with the questions rolla. It may be easier for us to talk on IM rather than here, answer them faster and more completely. The phone would be the best (other than in person) but I dont have worldwide free (free, haha) long distance (only in North America).
If you can download AIM from
www.aim.com and get a screen name, we can setup a time to talk more in person. My screen name on AIM is ctrarborist.
I am certain that the rayco is the best option out there at this point. Its not as much a brand thing as its a spec and performance thing. Hydraulics are better than a belt for many reasons, some are my opinion, others are facts. I will list them here, you can ask about them here (but AIM would be easier for me).
1: Less stress on the motor due to pressure release valves in the system.
2: Speed of cutter wheel is variable to the motor RPM due to the variable displacement pump, good when grinding roots or gravel (high motor RPM, slower cutter speed)
3: Less overall mantience. The polychain lasts for MANY hours, and change the fluid every 250 hours.
4: You can see what your grinding better because you dont have the motor and belts in the way
5: You can stall the motor, but with hydraulics you have a second or two to pull out and let the RPM's build back up
6: The V belts are annoying and either the clutch will wear out or the belts will sooner (if the engine slides)
7: The engine doesnt move with the cutterhead, and there is no clutches to wear out
8: Hydraulic pump and motor life its very long.
Probably some more I am leaving out.
Another question rolla. Whats your buisness plan? Another 5 and retire or keep working as long as you can?