Questions on IVOPROP IFA magnum

I am planning to buy a IVOPROP Magnum. I would like to hear from anyone who has actually flown with an IFA prop

I am looking to by the 3 blade IVO Magnum IFA.

My questions are.....

Are you using a amp guage to help figure out where max pitch is? How often does your circuit breaker pop? If you bought one recently how long did it get to arrive.

Thanks.

Charlie