I have often considered the question, how do I compare the performance between the M and the 135. I haven't been able to properly compare them over a set course to give a definitive opinion but I would say there is going to be very little difference in straight line performance (here at reef altitudes). There is a major diference in the "feel" though. The M is a sportscar, the 135 is a very fast car. That is the best way I can come up with in describing the difference. This has to do with the seating position, ride, feel, sound-track etc. the whole experience.
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