Which would you choose for good sounding tube preamp for an audiophile new to tubes.

I would look for an Audio Research LS17 SE.  $1500 will likely never get one but maybe under $2000.  That would be a nice intro to ARC that could keep you going for many years.  

The Bottlehead Moreplay kit is $439.  Sound is fantastic with the stock tubes but if you add good NOS 6V6 tubes and upgrade the coupling capacitors it gets even better.  I mostly can't tell it apart from my PS Audio BHK preamp.  I have also used the Freya, Cary SLP-03, Cary SLP-70, and the SP14 which is the basis for the Don Sachs preamp.  I think the Moreplay is better than all of those.  Biggest negative is a relatively high output impedance.  Your B&K's impedance is 33K so about a 10x ratio which is fine but not ideal.

As I previously stated, of those you mentioned I would choose the Quicksilver. 

As an alternative you might contact Aric Audio. See his web site. He makes a great preamp at several price points. Much info by owners on this forum, I being one.

@arichison One other contender I would look at is a Rogue 99 Super Magnum on the used market. Make sure it is a Super Magnum, not just the stock, and not just the Magnum. The 99 on its own uses four 6SN7 tubes which are very fun to roll, as well as different gain settings in addition to the volume to best match with the rest of your system. The Super Magnum builds on this by adding Mundorf Supremes over the stock caps, Cardas solid copper connectors and Cardas wiring internally. IMO the best money you can spend on a preamp for $1500 or less.  

I agree with mesch, QS is quality gear, but Aric Audio should be your next consideration! Superb sounding preamps/line stages and unbeatable customer service is why the only piece of gear to remain on my rack after all other components have ben swapped in/out at least two times is, The Motherlode.