I owned tube preamps for many years. CJ Premier 14, then I moved to Audio Research. My last ARC preamp was the Reference 3 and I loved it, but did not love having to pull it out of my system to change the tubes.
I found a Pass Labs XP-30 (MSRP $16K) used for about $6K, so I jumped on it. The sound out of this preamp is every bit as clear and musical as the tube preamps. But it is pricey. However, Most people seem to be purchasing the two-piece (mine is a three-piece) Pass preamp for about $10K. Still expensive, but I wouldn't have any concern about buying one used. Pass makes very solid products.
And I actually must admit that I like the Pass preamp more than the tube preamps I'd fallen in love with. I called my neighbor over to hear it and immediately he commented on the clarity of the new preamp and my system. It's an improvement.