Indeed an interesting TT Luc. But quite pricey - for what it offers - in my view.
Yes, I've heard that acrylic has very similar properties to the vinyl an LP is made of. As vibrations travel from one thing to another better when the two things are made from the same material ... with an acrylic platter, the vibrations generated in an LP by the stylus 'ridin them grooves' should transfer better to the platter ... than in the case of a metal platter. If the platter is of some weight - as this one is - then it should act as a good sink for LP vibrations. Which is a good thing.
Re. metal platters ringing - if I hung my Linn platter with a string through the central hole and dinged it with a hammer ... it would certainly ring for a while. Whereas if you drilled a hole through a perspex platter, hung it and hit it with the same hammer ... I suspect you would just get a 'thunk' (not an ongoing ringing).
With both an AC motor and DC motor - sure, you can get different qualities of engineering in both ... but it's ultimately the quality and sophistication of the motor controller that determines how good it 'sounds'. A simple feed for a Premotec AC motor - as used by Linn, Rega and I think, Thorens - is simply a resistor to decrease the mains voltage to a suitable voltage for the motor ... and a cap between the 2 motor circuits (to deliver a 90 deg phase difference). This however, means the motor is subject to the frequency variations which occur on the mains - so the next step up is to generate a stable 50hz sine wave from an electronic circuit. That's what the 'Valhalla' PS did, for an LP12.
Ultimately, for an AC motor, you can go up to Steve Tuckett's 'Number9' motor controller - which I have. This:
allows the frequency to be changed - to allow you to get your platter turning at exactly the right speed.
allows the phase difference between the 2 motor windings to be altered (the optimum is not 90 degrees!).
allows the voltage fed to the motor to be adjusted.
With a DC motor - the speed depends solely on the voltage fed to it - so you have to get the voltage:
a. exactly correct, and
This takes some considerable sophistication - which both Linn and Edmund Chan have been able to resolve. (So it's the "over' engineering in the circuit which that comment is aimed at - not what you see on the outside!)
I suggest there are lots of competitive TTs at that price. And many of them would allow you to choose the arm you prefer.
For instance, I could provide a SkeletaLinn with, say, @lovetube's 12" Univector arm and one of Edmund Chan's motor controllers for less.