@peterayer , You choose what sounds right based on, design considerations and measurements especially when it comes to tonearms.
@neonknight , I also have a Cosmos. The TriPlanar is a great arm but it will not fit on a Cosmos. That dropped rear end runs into the plinth. The SME 5 is a great arm. Origin Live arms will fit but I prefer the 4Point 9 and the Schroder CB. I have a Schroder CB and the only bad thing I can say about it is it does not come with a tonearm rest. Mr Schroder thinks they resonate and will not put one directly on the arm. I made a locking one and mounted it on the Sota's plinth. You can see it on my system page. I have both walnut and cherry in stock if you would like one. Otherwise the CB is as good as a pivoted tonearm gets. It is neutral balance, is adjustable for different cartridge compliances and has a wonderful frictionless, magnetic anti skate mechanism. It's geometry is also right on the money and it lines up Lofgren B perfectly. The 4 Point nine is less expensive. The wire leads out over the plinth instead of under and usually has at least one additional connection. The Schroder is one wire clips to RCAs or XLRs. Otherwise the Kuzma is an excellent arm.