As a rule, riders don't like the recently built circuits. Not so much because it means they have a new track to learn, but more because of the nature of the newer circuits: designed to equalise the greater speed disparities of Formula 1, and to maximise the spectator view by fitting inside a limited chunk of real estate, they tend to feature a lot of slow corners, with shapes that look good on the screen of a computer modelling program.
Istanbul, however, is different. The track has been designed to make the best use of the natural rolling landscape, with, for example, turn one flowing downhill, then uphill again, loading up the front before you start braking for turn two. The track flows up and down the hillsides, with corners at every speed, including the fastest corner of the season, turn 11, a banked, uphill, flat-out-in-fifth 270 km/h right-hander, which Nicky Hayden summed up as "sorting the men from the boys", followed by the super-slow uber-chicane combination of turns 12, 13, and 14, which saw spectacular place-swapping action on every lap during the 125 race. To be fast, you need to get your bike perfectly set up, and set up to be both stable at very high speed, and also to turn quickly enough through the slow chicane. It is a rider's track, rewarding every aspect of their craft, from set up, to high speed chases, to heavy braking and quick changes of direction.