Decisions, decisions....

I'm one of the Naim fold, getting back into vinyl in a more serious way. I currently have a Moth (i.e., Rega P2) with a rewired, re-weighted RB-300 , currently using a Shure V15vxmr that to my ears sounds pretty darn good. Recently I have acquired three other things, all needing to be set up and give a listen. 1-an older Sota Sapphire with the Sumiko arm, 2-a Rega P7, and 3-a Linn LP12. I'm a bit ocd-hence the case of GAS. A musician to boot. So what cartridges would you folks out there recommend? I'm set up to go either MM or MC, and I have a couple of the Shures-one NIB. Like I said, the Sota has the Sumiko arm; the Linn is pre-Cirkus, Akito, Valhalla, Trampolin; the Rega, of course has the 700. I am eager to try the MC route-trying to keep cartridge costs under $2k each (or about that)-which brings up another obvious question, does a Lyra Delos, or a Koetsu Black, etc, outclass the tables I own? And the cartridge doesn't have to be that expensive if there are options that would get me "there" for less. Would I be better off selling the lot and getting a single, more expensive deck? I like the idea of checking different things out, but I suppose I could do without that. One caveat-I haven't heard the VPI Classic, but I must say that the other VPI's, though they sound good, seem a bit overly analytical for my taste. That said, please share your thoughts.