[kazinator]

Many solid state guitar amps are made by the tube amp companies, who have a vested interest in treating those models as entry-level stuff from which the real pro is supposed to upgrade to the inconvenient tube stuff.

The mistake with most solid state guitar amps is that they have similar wattages to tube amps. At stage volumes, it's easy for a measly 50 or 100W thing to go into clipping.

If you want solid-state guitar amplification, skip guitar amps and use a high wattage power amp used for sound reinforcement. E.g. something that puts out like 800W or more into a 4 Ohm load. This will have the headroom not to crap out when competing with the other guitarist's 100W head.

Not only that, but it will cost you less $$$ (particularly in the second hand market), and likely weigh less than your friend's 100W tube head.

Solid state guitar amps from guitar amp companies are snake oil, basically. They are not representative of what you can do with solid state.

Did you know Eddie Van Halen used solid state amps? One thing he did was to use a Marhsall tube amp head as a giant guitar pre-amp: capture the speaker output, reduced to line level, and re-amplify with a power amp, like a H&H V800.