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.
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It depends on what u want to do with ur amp ! Are u in a band and need a big loud amp ? It also depends on how long u have been playing ! The marshall 30 watt marshall i'm using now is quite nice. If u want to use an amp to play in a band a 50 watt or more would be what u would need. Perhaps u need to test some out first and see what u think is good and if its worth getting.
