How long have you been playing? I was into guitars when I was a younger, too. When I was picking my first amp, at first I just went by how it sounded in the store, but a lot of nuances came up once I got home. I started reading manuals and realized there were a lot of things I didn’t know, like how to properly set the gain and EQ so the sound wouldn't be a "mess." Back then, I looked at the manual they gave me. Now, I check them out on
https://manualmachine.com . This site has often come in handy for me as an adult when I need to fix something, and I think you can find the manual you need there. There's a lot of interesting there. For example, some models have additional modes, such as "bright" or "reverb," which the store might not show you. So I'd recommend checking the manual beforehand-it helps you make a more informed choice.