I bought a Challenger Pro 4p like 6-7 years ago now?
I had some problems with it after 3yrs or so, but Anthony dropped everything and tried fixing it up even though he was very busy that day.
His customer service skills were exemplary and got a result.
If you live in or near Sydney he is the guy I would always recommend them to. Plus his party hire is top notch.
Would love to update to the Ultra Platinum Pro, but it might be too hard to part with my Challenger. Still saving for it though