I used to be a Chevy guy now I drive a Ford. I have a Futaba and a Hitec and love em both. My Hitec is a 7 year old Focus 4FM and it works as well today as when it was new. The attitude you have encountered is far too common , I have seen it in everything from motor oil to video games. It is usually a result of supposition and not experience ( an engine we rebuilt blew up because we used P---oil , when it was more likely the loose rod bolt that they dont wish to admit ).