not a chance the gt86 would beat it round a track mate....the m-sport set up is just about the best track day set up....ask most racing drivers and they will testify that a m-sport set up car will out handle just about anything on a track in the same power class.
if you want to get techy, i accept that the turbo adds a little more grunt, but the gt86 puts out 200+ emissions and only 200bhp with a laughable economy of 35mpg...the 123d puts out 218bhp, 135 emissions and 45mpg....so there goes your 3grand difference straight away...think of the fuel savings, tax savings, mine is £65 a year tax, i drive it like jason plato and i still cant get below 45mpg....and i can fit 2 adults in the back in comfortable bucket seats and knowing toyota, the back seats are a joke in that
the staggered offset alloys option is amazing, gives massive amounts of rear camber and amazing grip, corners at ridiculous speeds
i'd put mine up against the gt86 on any track, embarrassing to get slapped by a diesel though
btw that piccie you put up is the m1, not the m-sport....the m-sport looks a lot better with a lower and better profiled front scoop and fog lights.
you cant make it out on mine, but the side profile & aggressive stance is awesome