Geothermal, Evolution Hybrid Heat or Evolution heat pump system?
Because I am personally familiar with Geothermal,it would be my first choice.
Ethics are as important as education.
Geothermal if I could afford it.
Its a good Life!
I like the evolution system personally, but if money isn't a problem and you have the room to install the loops geo is the way I'd go.
Use the biggest hammer you like, pounding a square peg into a round hole does not equal a proper fit.