The word on this site (and others) is if you want a 200-speed slide film, order the Wittner-Chrome 200D from Wittner-Cinetec. Same emulsion as the CR200, but supposedly without the yellow cast. I've yet to try this film but others have indicated it looks good.
Info about the film: http://www.wittner-kinotechnik.de/ne...php#20130829-1 (Google Chrome does a decent translation)
Their order form is here: http://www.beaulieucinema.de/order/order_e.php