Dave,
The only decent tube pre-amp with phono stage that I've really enjoyed was a CAT SL-1 Signature MK 2...however, I would recommend getting the MK 3 version and up. Price for a used MK 3 is about $2400 USD (less for a MK 2).
I had a Shelter mc cartridge with 0.4mV output and the gain was more than adequate (around 46db for phono section). A cartridge with less output will probably require a mc stepup tranny. The sound of the CAT is not as warm as most would think...actually it's a little bright/forward sounding compared to say Sonic Frontiers (darker and not as transparent). The CAT has a wide soundstage and quite detailed.
The CDN dollar is very strong vs. the $US so now is a great time to buy since most of the good used pieces are located within the US.
Happy hunting!!