Any thoughts/experience with Rega Aphelion or Apheta 2 MC cartridges?

Hi people, Is anyone using or have used the Rega Aphelion or the Apheta 2 cartridges? I was tending toward the Ortofon Cadenza Bronze but my HiFi sales/superannuation guy warned me off the brand.

I have been researching cartridges but really, unless you have had one in your system, I cannot express an opinion on any.

I have a Micro Seiki BL-91L with an MA-505LS arm. He's the big boy I want to match.

I also have a Kuzma Stabi Ref 2 with a Kuzma Stogi Reg arm and a CAR 30 cartridge which I am happy with but have not experimented with.

I would appreciate anyone's opinion on the Rega cartridges as, on paper, they look good.

Thanks, A.