What I'd really like to compare, would be the difference between the Acrolink and the Oyaide 004 (or M1 for that matter) connectors.
The Acrolink ends use bronze as the base metal, while the 004 and M1/F1 use Beryllium, so they sound a bit different just based on that difference alone. The heavy barrel and carbon fiber also lend themselves to the sonic signature of the Acrolink's. I won't comment on the differences I hear between the ends, but they are state of the art, IMHO.
The carbon fiber and machined aluminum that the Acrolink use as the barrel are really quite a work of industrial art.
Disclaimer--I was one of the first two dealers of Oyaide and Acrolink in the US.
Peace,
Lee