I own Dynaspheres, Arcos II, Aramith Tournament, Centennials, Elephant, and Vigma sets. Several of some of these. I enjoy playing with them all.
FULL AGREEMENT HERE ABOUT Dynaspheres!
In order of MOST DURABLE: (Stay clean / don't get contact marks)
Dynaspheres
Arcos II
Tournament
Vigma
Centennials
Elephant
In order of best looking / cool factor:
Centennials
Arcos II
Dynaspheres Palladium
Dynaspheres Bronze
Dynaspheres Tungsten (cool 1940's vibe colors)
Vigma (Stars and Stripes)
Elephant (Beautiful / Swirl)
Tournament or Tournament Black