It depends. A beginner probably needs 'simple' and it doesn't matter if the amp itself sounds like total garbage. I had a terrible Crate GX15 as my first amp, but these days I would probably pick up someone an Orange Micro Terror with the little 8" speaker. Three knobs, can be quiet or blisteringly loud, weighs about as much as an adolescent badger. There are plenty of tiny tube amps in the same market space, Vox AC4, Orange MT, hell that Marshall Slash signature 5W combo looked pretty hot too, the Champion 600 can be had for a song used and sounds pretty damn good out of the box, IMO. The problem with modelers for a beginner, and some people who are intermediate, is that there are just too many options. I work in computers, so I play guitar to get away from them. I have a Roland Cube I love, but if it has a USB port on it I stay away from it. The fewer knobs and models the better, so you can just find that sound you like, or at least tolerate, and crank it.