The Mazda MX-5 is the best selling sports car of all time, and for good reason. The roadster has long been admired for its blend of near-perfect rear-drive handling, bargain price, and simple design and is now in its third incarnation. But with time the car has become heavier and more sophisticated - so does it still offer cheap thrills and razor-sharp roadholding? The PH team got one in for a week to find out - and this is what we thought...