VPI Analogue Drive System

I just got through reading the whole thread on the VPI forum about this unit...the one that closed down May 5.  All I can say is WOW.  Such invective! 
I missed out on the Eagle/Roadrunner units because I wasn't really interested in this until now.  I would only get the ADS if it made a difference in sound quality and there seems to be surprisingly little comment about this.  I'm also concerned about the on/off switch on the motor eventually giving out.
I may have to take a leap of faith and purchase one from MusicDirect with a 60 day right of return if the unit makes noise in my system.

Thank you for your responses.  Using the Platterspeed Feickert phone app I know my unit runs a little fast, about 33.5 rpm.  It seems fairly consistent.  It seems to me the Sutherland unit will tell me the same, but how does it slow it down to 33.3 or maybe I would want 33.2 for some recordings that sound too bright?

So it's kind of as I thought.  If the unit is left on all the time there should be little variation in speed from that point of view.  Stylus drag and bearing friction should also be constant.  Apparently the speed can be controlled with minimal turns of a dial. 
I was thinking along the lines of ramping the speed up or down in tiny increments to see how it might affect individual recordings which may too "bright" or too "dull".  I listen to classical music exclusively and many digital recordings sound "digital", just like CD's. 
Has anyone experimented along these lines, to make these recordings sound "better"?  Or am I way off kilter?

I moved my motor drive belt up to the top slot on the motor drive pulley which effectively lowered my 3150 test tone from 3160 to 3149 on my PlatterSpeed app.  There was a significant improvement in sound quality with all my MC cartridges (I have 4 of them).  This obviously didn't cost me anything and I should probably have done it awhile ago, but I've just started paying attention to this tweak.  So far I'm not running out to buy anything yet.

Melm:

Sorry.  Wrong word.  At this point I'm almost ready to take your advice not to buy anything and maybe the DIY components that Phoenix Engineering used to make will be available again.
So far no one who has bought the ADS has responded as to how great it is.

Tom:  eagerly awaiting your report re sonic improvements with ADS unit.  This was my original question.

I had forgotten about his thread.  MusicDirect discounts the ADS to $850 so I bought one.  It does seem to improve my vinyl playback system with wider soundstage, better instrument separation, better dynamics, overall musicality, etc.  The factory setting is a little off so I'm using the KAB strobe system to set it exact.
I know I'm echoing the VPI endorsement, but I'm pleased with it.