Best bet is to sea trial both. I've asked this question here before about the Aspen Cats and was grilled on TN that I worked for Aspen🙂 Remember this is a "Ranger Tug" forum.
So... take that with a grain a salt and when you're ready to purchase all manufactures will gladly take you on a sea trial🙂
Even if you're interested in buying used, a sea trial is a must.
You can also do a charter if you can find the boat you are interested in with a charter fleet. In Anacortes there is Anacortes Yachts charters, they have several RT's in their fleet, not sure if they have a Cat though.
Good luck, love to hear how that all goes for you. I'm interested in lots of boats, not just RT. But my wife and I really like the R29.