Seeking Suggestions on Preamp Upgrade (CJ, Aesthetix, EAR)

Hi David,
I have been using the Aesthetix Calypso with Genelex Gold Lion tubes that I got from Kevin Deal of Upscale Audio. A great upgrade from the original stock tubes. The preamp has worked flawlessly from the time I purchased it. Its a neutral sounding  pre , highly musical and bullet proof.  Its a match made in heaven with my Jadis. I would highly recommend the Aesthetix Calypso ( with the tube upgrade, or you can also get NOS Telefunken, albeit , a little more expensive tubes  & get an even better sound   sound )

Excellent exchange of info here guys.  Happy Listening!

First of all, thank you all for the recommendations and shared your first hand experience.  It is a great learning experience.  

Stringreen, forgot to mention explicitly that I would like to go with tube preamp.  

I have a CJ CT-5 which I use with a Legacy [Coda built] amp. I am really happy with it, but it is one preamp that you can't do much tube rolling, the 6h30 comes in 3 varieties, and the NOS version is now sky high.
If I was looking for a preamp in your price range, consider the PS Audio BHK  Signature preamp, they offer very good deals with a trade in. And a 30 day trial period.
How it would match up with your other gear, no idea. Just one more to consider.