I have been looking around and it seems there are several TRE's out there. I have seen them from 20 bucks all the way up to 110. What have you guys had success with and which TRE would you recommend? any help appreciated

I'm looking at installing a TRE (Timing Retard Eliminator) and I'm wondering if anybody has used one. What changes did you notice (if any)? Did you have any problems? Are the manufacturers claims (below) true? The story from the TRE manufacturer is that Suzuki has deliberatly...