I know, this is likely to be a big YMMV topic, but I've been playing with various bowls and found an odd one that I can generate lather like crazy. It's a small kid's snack bowl. It's plastic (it's only downfall because it doesn't retain heat), 1.5" deep (I have a Rooney 1/1 so I need a pretty shallow bowl), it's slightly oblong and is 4" across at its narrowest point and 4.5" across at its widest.
I have tried a myriad of other cups and bowls both metal and ceramic, all of them round, most of them pretty shallow. I'm trying to figure out why this works so well for me. Maybe it just fits my lathering style. Maybe it's the oblong shape versus round. Maybe it's the plastic versus metal/ceramic.
I figured perhaps comparing your preferences, I might zero in on something.
I have tried a myriad of other cups and bowls both metal and ceramic, all of them round, most of them pretty shallow. I'm trying to figure out why this works so well for me. Maybe it just fits my lathering style. Maybe it's the oblong shape versus round. Maybe it's the plastic versus metal/ceramic.
I figured perhaps comparing your preferences, I might zero in on something.