Preamp Deal of the Century

Today I´ve listened the Cab with the Mundorfs for the first time and I´m quite impressed, not subtle differences but very noticeable ones, bigger soundstage, mostly in the vertical plane, clearer sound and deeper and more tied bass. I guess that after a few hundred hours it will be even better.
Mick told me that in the Syrah the Auricaps are better then the Mundorfs, it looks that the big Mundorfs are better then the Auricaps but on the contrary the little Auricaps are better then the Mundorfs.
A new discovery for me in the 6SN7 field, the Sylvania GT from 1952, great tube, delicate but with lot of information and good bass.
In other prior post I asked if all the indirectly heated tubes have slow start?. Could anyone help, please?.

Lrsky:

Build quality seems excellent to me. The unit has a solid feel to it. That said, I'm sure if I dropped it, it wouldn't fair to well. My unit shipped packaged very rigidly in a large Fedex shipping box. You should have no concerns regarding the build quality of Suprateks.

jpms, some of the posts in this thread deter me from contributing, but I can help you with your questions:
1) U54 is another designation for GZ37 and CV378. It's not a GZ34, but it's listed as a suitable sub in Mick's owner's manual.
2) All indirectly heated rectifiers have "slow start." Not all indirectly heated rectifiers can be safely sub'ed in your Supratek though. Nothing personal, but I find a lot of the recommended tube substitutions in this thread way too liberal.

Thanks Kgturner, this is answer I was looking for when I posted, not a bunch of vitriolic name calling and 'agenda' comments.
It seems logical that the vast majority of pre's would not do well if dropped, in fairness. My experience tells me that most of the UPS/FedEx claim issues are from their dropping and poor handling, not faulty packaging as they would tend to suggest to claimants.
I know that Mick has a great 'ear' and his units are revered--it's just that someone I respect had made a back handed comment about Supratek's 'build' quality--which is why I asked.
Thanks again.
Larry

Twenty minutes ago I pulled all the tubes out of my pre and threw it down a flight of stairs.I put the tubes back in ,hooked it back up,[it does not work]??? Can someone please help me...Just kidding...What I like most about my Supra pre purchase, is the price I paid . Hence Slowhands title.A great performing preamp that comes with a phono stage as a gift,and what a phono stage.Who here has spent more only to realize later you ended up with less....Mustang,I have not yet installed the metal base Miniwatt yet.Really looking forward to it.I have afew days coming up were I can lay around and listen all I want.