I own the Scheu Premier mkII(80mm platter) along with the top of the line 9" Scheu Tacco unipivot AND the Cartridge Man Conductor linear tracking, air bearing, tonearm(
HiFi Plus review). Both cost ~$3,000 US.
Unfortunately, I do not have the Premier with dual armboards(nor two of each cartridge), so it is impossible to A/B comparisons. Nor am I anything close to an expert at setup, so I have no idea if I have ever heard an optimal cart/arm matching in my system.
Which sounds better on the Scheu?
I really don't know. The amount of time between setups is so great, I would be lying if I even tried to venture a guess. I can say both knock my socks off when mounted and properly dialed in. So much so, that in the last year and a half, I haven't been able to get up the guts to sell either off.
Both have the advantages and disadvantages. Aesthetics go to the Tacco. Ease of use/setup goes to the Conductor.
Primary dowsides: As with all LT's, pump noise and air hiss is an issue to deal with, especially if your turntable is close to the listening position.
The Unipivot always causes stress/fear when cueing an expensive cart. Nothing like seeing it do it's version of a drunken jackhammer.