Please recommend a good Tube preamp.

Try the Tron Syren (www.tron-electric.com). Tron amps are hand made by Graham Tricker (and only him!) in the UK. His tube amps are of the highest quality regardless of price. However, as they are made in tiny numbers, most people haven't heard of them let alone heard one in the flesh. They are designed for the ultimate in performance, regardless of price and use bespoke components and specially designed circuits with short signal paths. I have just bought his own demo Meteor preamp (the Syren predecessor) and I have heard the Syren at length. It sounds like music with all the grain removed -remarkable. If you're in the US, he is prepared to sell you one on approval, although I doubt you'll want to return it.
Alternatively, you could buy from his website his second hand Nucleus line preamp and Nucleus phono stage (circa 1999) which is also excellent.

audible illusions modulus 3a, vtl ultimate, CAT SL1

I will also second C123666's answer on the Audible Illusions 3 and of course the CAT, if you can afford it. I just placed NOS tunsgram 6922s in my AL-3 and it sounds astounding.

Try the KORA Equinoxe.

Do you require full remote control or just volume control?

I like the Emotive Audio Sira linestage and the rather pricey Epifania. Neither are remotely controlled, but Fred Volz, the designer/builder, said that he could put in a remotely controlled volume pot. I know he was looking into the remote control modules offered by Welbourne Labs at CES, so perhaps he could also put in remote control of other functions, like input switching and balance control. Check there stuff out at Emotiveaudio.com.