I have an old Marshall Valvestate 8100 head with a Marshall vs412 cab now but i think i need to upgrade!

I mostly play, Rock/blues/metal but even genres as post rock etc.

I found the ENGL Fireball 60, if im going to used it on tour, would it be better to get the ENGL Fireball 100? There is a difference in watt so it might sound weaker? I am such a noob when it comes to amps..
The 60 is a nice amp, but if you can afford the 100 its definitely worth the extra cash. Neither are great at getting a conventional blues tone on the overdrive channel, but metal and rock it has in spades. If you plan on doing blues look into getting a decent overdrive pedal to run with it, cause the clean channel is great and takes pedals well.