Here the idler/DD TT's beats any belt drive design ( including the Walker ). I own four belt drive TTs, three SP 10MK2, two DP80s and one DP75 Denon's. In the past I was owner of: SP10MK3 and a Denon DP 100 ( please don't ask why I don't own today these two TTs. I don't want to remember it ).
Raul, although I frequently agree with your writings, we are very far apart on this topic.
Having owned multiple direct drive and idler wheel drive design turntables, I am aware of their strengths. No question their speed accuracy is uncanny, but there are a few exquisitely engineered belt drive turntables that overcome this technical obstacle.
The Walker represents the pinnacle of this engineering, maintaining flawless speed accuracy and control that equals the idler wheel models while maintaining such virtues as adjustable air suspension system, air bearing non-resonant platter and integrated linear tracking arm with adjustable pressure air bearing.
Understand, I was one of the first to compliment Johnnantais and throw my support behind him when his Lenco thread was begun. In spite of my admiration of the Lenco and Garrard idler wheel designs, there is no contest between these and the Walker.
We can banter back and forth on this all day, so I will just say that you're entitled to your opinion and that I don't share your view. This, based on my own experimentation over the years with hundreds of turntables.