Haven't shot the Chinook, but I did test drive a Whistler for awhile. Excellent bow, typical Toelke quality. I really liked the grip, as well as the feel of the shot. Fast, quiet, and pretty. Ended up with a Pika a year or so later, which is very, very similar, just shorter. In hindsight, I would have gone for the Whistler, only because I think (but can't say with certainty) the length might provide a slightly easier draw.
Nineworlds9 and Biathlon man have a lot of experience with both the Chinook and Pika. I think you can consider the Pika and Whistler equally for the comparison, maybe those guys will chime in. If not, a little searching here will give you lots of good feedback. Don't know if you'll find a direct comparison, but you will find plenty on both bows. The Chinook is always said to be as good as it gets among it's class of recurves.