REO Mod ?

Does anyone have any expereince with the REO MOD?   Thinking about purchasing my first bottom-feeder.  This Mod looks interesting and well-built.  But would like to hear what others have to say.  I have watched the YouTube videos on the REOs.   But I am not sure that all those videos are justified.  They seem more like advertisements.  Cuz their are no negative comments.   I am just wondering if it is hard to push the bottle without over-dosing the atomizer or flooding the atomizer.   And if it becomes a messy leaking feeder type.   Not sure if I want to just go with a higher volt Mod and Tank system?  Any actual users of this REO would be great to hear from.