I bought a Katana 50w, but my Strat Squier could not get on with it. I don't know if it's the shielding or what - I swapped out the pups, checked the amp was fine etc - but the constant buzzing hum was too much, and had to sell it on. I've just bought a Vox VT40X, which I know doesn't fight with guitar. Has more than enough amp sounds and effects to keep me happy while I develop my playing. Looking forward to picking it up later this week.