Hi Tom- I just spent some time reading all the past posts about spiral mixers so I wouldn't be redundant but I didn't quite find what I'm looking for. We make dough batches ranging from 30#-80# of flour. More often we are in the 40#-70# of flour size per batch but are growing so want a little extra capacity. I'm having a hard time sorting out which size Spiral Mixer would work best for me. Some of them are rated as qts and some lbs.. I'm also looking for opinions on current brands and quality for medium price. There were so many more of these at the Expo this year which is super exciting but I don't live anywhere near supply places where I could test any or shop so I will be making a purchase online. Many thanks!