I've pitchpoled all my cats except the 5.8 they're predictable in heavy wind and also good on light wind days, would have one now but I'm addicted to the spinnaker. Darren's spot on regarding contacting John Wright and weight with 1600+ having lighter masts as well. I would only look at the ones with a bridle foil and the bigger jib that goes with it.
If you go for the Stingray let me know I have a line on a couple.