Update. I got a Total Custom Tacks X, and I have to say, it's quite possibly the most comfortable and form fitting helmet I have ever worn (no negative space). It's night and day vs the retail version, and the retail version is a pretty comfortable bucket. Interestingly enough too, the liner in the custom seems more robust than the retail version. Much less concern about any of the nest tech lattice getting "broken". The custom liner also deals better with sweat vs the retail. Now, if I were contemplating buying a retail X vs a custom X, for the price difference I would go for the custom. However, is the custom that game changing for the price if a $200 bucket works pretty well for someone....not so sure about that.