Yet another contender for my Klyne 6PE: ARC PH5

Hi,
still interested in a new phonostage, I bumped in a preowned ARC PH5.
would it better my Klyne 6PE ? if so, under which respects ?

rest of my amplification is ARC LS25/II + ARC 100.2

another question: I see PH5 has a single gain value of 57.5db (if I don't go wrong): would it be a good match with my Lyra Delos ? I think it would, but then again: what if I change cartridge ? I mean: what 'kind' of cartridge should I go for ? medium output MC only ?
that gain looks to low (to me, at least) for a very low output MC and maybe too high for a HO MC or a MM. am I wrong ?

thanks, ciao
daniele