What are the more subtle sounding tube preamps?


I mean "subtle" as in relatively less tube saturation or color than your average tube-pre. Common sense tells me less tubes as in a single dual-triode, but in reality that may not be the case. I currently have my eye on a CJ Classic. Not sure if that will fit the bill.  Any suggestions welcome.
robertsong
The McIntosh C1100 is amazingly subtle.  It is dead quiet and just presents the music as it was intended.
I have the VTL 2.5, the bargain model if there is such a VTL.  I have tried it paired it with VTL MB450 monoblocks, a McIntosh MC500 and an Adcom 5500.  The sound is very neutral.  The sound through all of the amps was marvelous, although the MB450s, which are Series I,  to me were the best by far.  This is the combination I use for attentive listening sessions.  The Mac seems to smooth the sound as if there is a light viscous coating on everything.  For background music I think I like the Mac the best.   The Adcom, although very neutral just didn't light my fire.  I am a true VTL believer and lust for a 7.5 preamp and Siegfried power amps.  My 450s are ancient and still have the original tubes.  To me they are sonically perfect in Triode mode and have proven to be bullet proof.  I highly recommend the VTL 2.5 and 7.5.
Yes, the older CJs and a few if not all ARC preamps might be described as phat or a bit lush but I never felt that a bad thing necessarily, opaque as well on some of the budget CJs of that era. I have a vintage CJ PV9a that has been extensively upgraded and transformed. I have owned and listened to many including previously CJ, ARC, CAT, Supratek  but this one is just so much more throughly enjoyable plus I really like it's phono stage. Lush and maybe a bit too much bloom for some but also very detailed and dynamic, huge Soundstage on appropriate recordings with totally believable timbre and highs that are real and airey, piano sounds like a piano. I will say this, when non audiophile friends visit we end up listening quite a bit more because this unit in my setup serves the music and transcends any discussion about adjectives, people just enjoy listening to music. The point being that how music affects one emotionally from playback is the real mettle of a component/system.

Some of the pres mentioned are SOTA designs and quite expensive and i'm sure stellar performers, that CJ classic is not but reasonably priced. I haven't heard it but imagine with the SE cap upgrade might prove to be good enough to meet your needs Robertsong. The more money typically greater power supplies and much better dynamic performance. Also important compatability of the output impedance with your amp. 

Good luck!
Modwright 9 is quite neutral and punches above its weight.  Great service from one of the good guys.