Sean, it would be my pleasure. I swapped out the Chinese tube that came with the unit about 50 hours in, and before I got the Lamm line stage back into the system. I ran an old Tung-Sol for a while too, and it sounded very good, but still before the Lamm returned. Currently running the fat base Mullard first series- not a cheap tube- and the Allnic, in combination with the Lamm line stage (with the ML2 amps into my horns) is absolutely glorious. This system has never sounded better. I'm gonna run the Mullard for a while, then try the RCA. I also have an old Mullard GZ-37, which is I think a 'skinny' bottle, not a 'big bottle' that I haven't yet listened to.
The system is so addictively musical right now, I start a listening session and have to be pulled away! It was by no means fatiguing before, but the system just didn't engage me to anywhere this degree. Rather than listening to records that sound good, and avoiding those that don't, I'm pulling out record after record and listening to the performances, the beauty of the music, and being sucked into the experience. Sure, some records sound better than others (some sound way better), but those are of less importance. And sure, the system still has limitations- every system has some compromises where the man behind the curtain is evident, i.e. the illusion that is sometimes magical collapses, but the musicality can carry me beyond this.
And, in the process, I am, as i think I mentioned, sometimes absolutely startled and enjoying the hell out of the variety of stuff that's spinning on my turntable.
NB. My only caveat to quick reportage is that we are in the process of selling our house, and may be in transition for a period until I am fully set up again. So, you may have to be patient, to the extent my views may have any value.
Can you PM me and let me know what phono stage you were using before? I don't necessarily want to turn this into a dump on X brand or model thing.