Ive owned both, prefer neotats, in 4.2 stroke. And actually prefer the older motors. hit a little bit harder. Seems like the "magic motors" are a little less punchy. Had a bishop a couple yrs ago and it had the slightest bit of give to it. Both are excellent machines, very similar. Again I prefer neotats. I believe they also originated the design; I remember their ads in magazines years and years ago w the older body style. I used to think"what an ugly f**kin machine". I have learned to not write anything off until Ive tried it.