I appreciate the long list. It is very helpful just as a point of information. I guess what I am getting at is maybe those who have owned, experienced, worked on, studied a number of 7's and have some degree of confidence in one engine or another. Of course the diehards like the S2000, Miatas and some others have demonstrated reliability in the cars which have donated them. I guess we all have different purposes for owning 7's. For some folks, reliability isn't the main issue as much as horsepower, torque, top speed, acceleration times, etc. I am more or less looking for decent torque, reasonable power throughout the acceleration band, but, most of all, reliability, since I am obviously not mechanically inclined or I wouldn't have asked the question in the first place. So, I guess this could become a game of adding to an endless list or actually addressing the question. As for why someone without mechanical skills would own a 7...that's a good one. Its also like owning a power boat without said skills and I''ve done that too. Some people would rather pay others to do the work and engage in other things. So, given a car with an owner who can't fix a car when it is stuck in some goodness awful place waiting for a tow, what engine would reduce the probability of being stranded? Maybe I should ask Mazda to move this question to the Newbie section after all.