I find adding a bit of reverb on my solid state amp makes my soloing sound a lot nicer.
As most other people said... it depends on what kind of sound you like best. Just mess around with the settings and find a sound YOU like.
By virtue of their electrical properties, tubes generate a special waveform when they're saturated, which is why tube engineering has tremendous tonal advantages over solid state or DSP solutions, particularly for crunch and lead sounds. Tubes enter the saturation zone gradually or softly, which lends tube-driven tone its trademark yet totally unique character.