I am running an RP10 with an Apheta 2 and they definitely work really well together - tracks well, good bottom end, smooth but fast sound. That said, I still miss my Lyra Delos which had an unfortunate accident with my now ex-girlfiend(yeah it's probably because she broke my Lyra LOL!).
I can't say that I understand compliance well enough to confirm or deny if the Rega carts will mate well with your arm but if they're within spec they are definitely making a much better cartridge than they were in the past.
I've tried MM's from all the usual suspects and on the MC side I've heard Shelter, Denon, the Audio Technica AT33PTG and besides the Lyra, the Apheta 2 has bested everything else that I've tried MM or MC. I would imagine if you tried one and ran it in for a month you would easily be able to sell to someone with a Rega deck looking to upgrade without taking too much of a hit.
I can't say that I understand compliance well enough to confirm or deny if the Rega carts will mate well with your arm but if they're within spec they are definitely making a much better cartridge than they were in the past.
I've tried MM's from all the usual suspects and on the MC side I've heard Shelter, Denon, the Audio Technica AT33PTG and besides the Lyra, the Apheta 2 has bested everything else that I've tried MM or MC. I would imagine if you tried one and ran it in for a month you would easily be able to sell to someone with a Rega deck looking to upgrade without taking too much of a hit.