Need fast help picking preamp before its too late


Which should I get for my B&K st-140 and JM Labs Chorus 706?
tubes
Conrad Johnson PV7 $400
Musical Fidelity X-Pre $240

SS
Forte Audio Model 2 $300
PS Audio 4.6 $320
Mccormack micro line drive $300

Please help as I cant listen to my new (used) amp? The agony!
bundee1
I love CJ, own and absolutely enjoy my PV11, but it's your money, SO:

Have Fun!!!
Will I keep the detail of my Music Hall cdp or will the tubes mush out the sound?
Sorry to introduce a wild card, but the Klyne SK-5A here at $695 is IMHO a whole other level of machine, a clear winner if you also have vinyl. ( Its phono stage is super. ) I guess it may be out of your price range, but it preserved the detail of my Shanling CD-T100 and it would do the same with the Music Hall you have.
If you haven't had a tubed pre in your system before, it's kind of hard to tell whether you'd like one or not--some don't, many do. I say go for it. Worst case scenerio is that you don't like it and have to sell it at little or even no loss. When I added a tubed pre to my system (CJ 10al), I did so because I wanted to enhance my analog gear, but it was my cdp that benefitted the most. The CJ made my cdp sound like analog--a good thing. Have fun and enjoy.
Have you given any thought to a B&K PT-3? I believe they have been replaced by the PT-5. You should be able to get a new one for around $450 or less? (Retail $595) Another thought. Different spks! I've owned three JM Labs spks.(Chorus 705/707/and an older two-way floorstander, can't recall model # @ the moment, and I've found them to be somewhat bright sounding w/the exception of the Chorus 705. I understand what you're aiming for. Considering your amp, which I've heard others say is warm sounding, MLD is my choice. (Added benefit: Use as headphone amp in the future.)
All good choices however. Good Luck!