For me it was a case of cost saving. I got a perfect condition 197 for $15k (about 7k pounds) less than a new 200 goes for here and it only had 8k miles on the clock, so pretty much brand new.
Then it was a simple case of 700 pounds on a set of KW V1 coilovers and you have yourself a car which handles better than a 200 cup with the only shortfalls being the slightly less torque and slower steering rack (which you hardly notice at the limit). Plus the 197 looks better for me lol.
But yeah, it's a toss up, you can't go wrong either way.