I have the IVOPROP IFA , it is okay , but is a little cheesy. It is much better than a gound adjustable.

I made up my mind that if I have a problem with the IVO , like IFA motor replace or even something more significant, that I will switch to an airmaster. I haven't had any problems with the IVO, but I don't like changing the leading edges or torquing prop mount bolts every 10 hrs.

I don't think the beta reverse thrust would be an option I would get, I don't see any practical reason for it.