Anyone heard the newest 12AT7 quicksilver Linestage preamp?

Thanks guys....i have used prior QS linestages and full function in the past....have you guys heard the older ones vs the newer? Differences in sound stage???
Alot of people I talk to say Audio Research LS3....do you guys have any experience with those?
I am edging toward QS but just looking for personal validation
Thanks again
T

So I bought the Quicksilver At7 Pre and am very happy with it.
I'd like to give a shout-out to Paul Rutan of Audio Connection.
Great guy, really cares about Quicksilver and was so generous with his time and attention. He really goes out of his way to make things work for you.
THANKS PAUL !!!!