I'm exploring crunchier tube amps, would like to add one to my rig. I have an opening in my signal chain, so I'm taking it as an opportunity to add a good old fashioned rock n roll amp. Something around 20 watts, give or take, with some chutzpah. I have it down more or less to a Vox AC or a Marshall Origin. They seem to have the best blend of clean and crunch. I'm open to recommendations, though. Like I know Mesa Boogies tend to fit this bill. I'm only just learning about different tube types, too, so if you wanna school me on that I'm listening. Also, head or combo are fine, but I'll probably end up with a combo. Thx.