X-scent is more of a base layer than a scent containment system. It is supposed to kill odor causing bacteria. The activated carbon suits absorb the scent, prevening it from escaping into the atmosphere. Coupled together, that is a good scent elimination system. As for which is better, scent-lok or scent-blocker, they act on the same principle and are probably equally effective.
If I had to choose either X-scent or Activated Carbon, I would choose AC all day. Just my opinion.
Please note that this is not a "does scent-lok/blocker,etc work?" thread. It is questions about products so please don't say "You don't need all that crap just play the wind" Thanks