Let's say you like playing:
I) Ozzy Osbourne, EVH, Iron Maiden, Metallica, Pantera.
II) Led Zeppelin, Rainbow, Hendrix, Pink Floyd (70s).
III) Jazz and Blues.
You play mainly at home, you already have a cab, your budget is cool (about ~900 quid) and you can choose only one amp (preferably 30-50...