best phono stage under 10k

Give Keith Herron a call.

My demo Audiospecials Phonolab 1.0 is in Texas right now for a demo. Wanna hear it? What cart(s) are you using?

Since I have a commercial bias I will refrain from subjective comment. If you don't mind using a translator you can find a very thorough german magazine review including measurements on the manufacturer website...

Tubes are no more susceptible to RFI than solid state.  In fact, to the degree that SS components may operate across a very wide bandwidth, up into the hundreds of thousands of Hz, some SS devices might be worse than a similar tube device.  Immunity to RFI depends upon how and of what material the chassis is constructed, internal layout of parts, length of wires connecting up the circuit inside, and deliberate shielding of any other kind.