Similar to Konical, I use a Beseler color drum that holds four 4x5 sheets and only requires 200ml of chemistry. I have a motor base for it, but before I got that, I just rolled it back and forth on a 2x4. It works well, although I am recently discovering that the spout light trap is not as good as I first thought. If I load the film a day or so before I process it, I have had a stray light leak appear that I used to blame on film holders, but subsequent investigation revealed it to be from the drum. I have two drums and they both exhibit this. It's easy enough to avoid by being careful. I also have a Unicolor drum, but it leaks a bit as it's missing the gasket. I just need to make a new one.