Boss Katana is not overrated, it's a really good amp and better than most tube amp in the SAME PRICE RANGE. I have the Katana 50w because I wanted something for home practice (0.5w) and jamming with friends (25w or 50w), with some built-in effects so I don't have to lug a pedal board. It's 25lbs, so lightweight and convenient. You don't need the computer if you go with the Katana Artist, and possibly not if you want a basic good tone. I plugged mine to a computer only for fine tuning. Don't expect to have a Bogner or a Friedman or a Deluxe Reverb sound out of the Katana, those amps don't cost $229 (50w), $359 (100w) and $599 (Artist), and don't expect those high quality tube amps to have the same good sound playing when everybody asleep, which the Katana can do. There's no perfect amps, that's why we have more than one, the same for guitars.