I have used both and prefer steel. Plastic or steel can cause problems, but steel always seemed easier. They are certainly easier to dry. It is also eaiser to tell where any problems are if or as they occur. The way I learned to use steel tanks was with an extra roll of film. Do it several times with your eyes open, the several more times with your eyes closed, then again several times wherever you will normally change your good film. It seems like a lot of trouble but in the long run it is worth it. Once you get the hang of it and do a hundred rolls or so, it is just like riding a bike. And as far as using an otherwise good roll to practice with, that is cheaper than lost shots.