Supratek or Don Sachs - which way to go?

Can say the same here, have been in correspondence with Mick this last week about his pre amps in regards to maybe buying one, he has always answer promptly, I can also say the same about Don, both seam like knowledgeable guys, friendly and helpful.

I have both a Don Sachs phono stage and one of his preamps.   The preamp is probably an early model, one of the first with remote.

Both are superb.   

Because of the pricing of Don's equipment there is a tendency to add "for the money" to review comments.
While it is true that Don's gear costs less than some comparable equipment that should not be the driver of the buying decision.
For instance, I also have a Pass XP 20 preamp which cost, new, so much that I would rather not say in case my wife's people are monitoring my Agon activity.
I keep both preamps because I like to change the sound of my system now and then....my wife still works so I can do this during the day and she does not notice.
Is one better than the other?
All I can say is that they are different.    And that I am glad I am lucky enough not to have to make a choice.
I will say that Don's preamp is by a large margin the best tube preamp I have had in my system, and I have had a few.
Don is a class act, always found him to be helpful and straightforward and goes out of his way to help a customer.   I have asked many stupid questions, sometimes about equipment other than his own and he always takes the time to answer.

I have not listened to either.

I have heard Don's preamp and it sounds really great. Also, he is a very nice and fair guy, who is happy to answer questions promptly.

Bought a Don Sachs all in preamp a couple years back.  Every component upgrade I've down has been a incremental increase in sound that I wanted to hear.....until I slid the Don Sachs into my system.  It was one of those moments that just had me smiling on every tune I listened to.  I havent heard the other pre's mentioned.  But I will say that there were posts where folks said they wanted the guts of the unit to look good.  All this time I thought this was an audio experience, not visual.  I'll be damned before I'll choose a component for looks rather than sound.  And I will say I have a cousin with a Supratec in another State also coupled with some very nice equipment and he swears by it.
We both would love to swap out to compare in each of our systems but distance makes it impractical.  Good luck with your choice.