i'm beginning to think yu're a retard. your sentences aren't making sense man, probably because you're typing in some unfathomable form of pre-pubescent text language.
I think you will find that he is not English, the handle suggests Danish, but I'm not sure.
I have an old SS Yamaha practice amp that I sometimes use in my office. The Blackstone works well with it, and can even give me harmonic feedback, but the Yamaha has a very good tone to start with.
Also what you're considering is retarded. A T-rex through a solid state amp is still going to sound like shitee. Spend £300 on a Klon Centaur and a solid state amp will still sound like a solid state amp.
If I run my Klon Cenatur into anything, it gives a great sound - have you actually tried one before you make a sweeping statement like this? There are good and bad solid state amps, and if you are using a decent one it is quite possible to put some effects on the front of it to give it some valve characteristics.
I do typically use all valve amps, but in the past is have used the HH VS and also a Vox Dominator, both of which are solid atate. I also have a Roland Bolt 60, which is a hybrid, and have played with guys using Marshall Valve state where they have had a great sound.
Buying a good pedal is never retarded, it will still give a good sound if you change amps. Would you tell him not to change pickups to BK's because he will still get a cr@p sound through SS?