I have owned and shot both, about the same draw weight, with different grips on both models.
The PSR and Chinook both in take down, are both about the same mass weight.
I felt the Chinook was a smoother draw at my 30" draw.
Both were plenty quick with 11gpp. I would give the edge to the chinook.
The Chinook was made with, in my opinion, prettier wood than the PSRX, and was finished to a higher degree.
The customer service from both bowyers is great, no need to have tested their warranties
The final selling point for the Chinook was the lack of noise on the shot. It is quiet enough that other shooters have commented on the lack of noise. I use wool puffs on all of my bows, from a skein of rug yarn that I bought sometime ago so they all wear the same type and size. I have not shot a recurve or longbow that is quieter than Dans bows.