Just want to thank you all for responding.
Yes only new units - I am an engineer by trade and I assure you you do not want an older unit with a lot of miles. Not even the best units are designed for that sort of stress. (true I think they are built better).
I agree on the ultralights - you cut weight somewhere. I think what I was really fishing for was input so that I could sort of get an idea of who may have better materials, processes, and quality control without having to tour the factories or pull a lot of information and comb through it. Often times the person using the product is a better judge than anything else that you can use to measure quality.
Again I thank you all so much!!!!