Originally Posted By: CatBrat
I believe that Potatohead has on-wall/in-wall M22's which go lower than the on-wall M22's do.


Correct, I have the IW/OW, which I guess used to be knows as the W22. In all honesty in my previous response I forgot the new on wall only version even existed, so my findings may be a bit skewed... I have not heard the newest version.