Who has switched from a PS Audio BHK Preamp to something else?

I happily ran the BHK pre for 3 years along with the 300 mono's.  I think it's a great preamp for the money, and I really liked the tube rolling flexibility for system tuning. 

But I am an itchy audiofool, too, and my budget has recently increased (kids all through college!  house paid off!) so I tried out the Luxman C900u pre and it plainly revealed to me how much more informative a preamp could be, but obviously at a higher price in this case.  Once I heard that much more musical info, I didn't want to go back, even though the Luxman C900u proved to be too "neutral" for my system and tastes (I run TAD CR-1's that need to be pulled back a bit from getting too hot). 

Next up was an ARC Ref 40 tubed pre, and it is still riding well in my system.  It has all that musical information, but with a bit more harmonic fleshing out, which is hitting my system really well right now.

So, if you are willing to spend more money, there's more to be had, but it's no "revolution", "wipes the floor with it" kind of thing.  The BHK gear is the real deal, IME/IMO, delivering a really good musical experience.   I could have happily lived with them both for years if my budget hadn't expanded.

Everyone's points about not judging the merits of the BHK using the stock tubes are right on.  I should have mentioned that I optimized mine, for my system and tastes, with Amperex 7308's from the early '60's.  These were importantly better for me than the NOS Tungram 7DJ8's that BHK himself reportedly liked.  And every tube of the 10 different pairs I tried in the BHK were significantly better than the stock tubes.  You've got to try others, for sure.