Tonearm mount to the plinth vs arm board vs rotating arm board vs isolated tower

The best for me is armboard on the rails to change Pivot to Spindle distance quickly for various tonearms when needed. This design invented by Micro Seiki for Luxman PD-444, PD-555, PD-441 series back in the 70’s.

If you will look here such metal armboards mounted on the rails and can be moved left or right, they are fixed with lock. Clever design! The "plinth" of those turntables are metal (damped inside).

In modern design i see something similar on Dr.Feickert's turntables.  

For practical reason this type of Steve Dobbins plinth for Garrard 301 is universal for different tonearms if you're going to use many. 
Same construction in Stereophile article 

Aesthetically Artisan Fidelity 301 is the best (imo), but you need many armboard to swap tonearms. 

Steve will tell you that the swiveling arm board is a compromise and is not optimum. It is a useful convenience feature. A very useful and very convenient feature but still a compromise. For optimum performance, he advocates mounting the tonearm directly to the plinth. No replaceable cut-outs, no extensions, fixed or rotating

For Garrard or for Direct Drive too ? 
Such plinth is easy to made if we already have one tonearm to mount. 

I see, the goal of Reed is that a mounting hole is not needed under this tonearm, it can be screwed to the flat surface with 3 mounting screws from the top.

Not sure what is best for your turntable but in my experience you can get great results putting the tonearm on a tower separated from the platter/plinth. In fact I have the motor, flywheel, platter/plinth, & tonearm tower all separate. Each "component" sits on Isoachostic feet. The flywheel, platter/plinth, & tonearm tower are on the same platform, while the motor is on a separate platform.

Do you mean toneam pod ? Who made them for you ? Images maybe @boxer12 ?

Sorry, no current pictures on-line chakster.

I remember this Japanese super heavy stuff from Toho, i’d like to buy one of these for Victor TT-101 and Denon DP-80, tonearm base also looks very nice.

Italian company Torqueo Audio introduced universal arm pods, here is one with Ikeda tonearm.

Chak, To your knowledge, is Toho still in the business of selling those accessories? The Torqueo stuff is beautiful (like a seashell, apparently) but not as substantial as Toho’s.

@lewm
No, not anymore, they are gone.
Toho also made their strange looking tonearm with bamboo arm wand (it’s on the same picture with cast-iron bases).