Is fast worth it?
Fast is a relative term...
Nothing less than PHRF 100-110 considered fast in a lot of fleets.
Unfortunately the boats you listed are all over PHRF 165 and unless you are planning on a run with spinnaker and a lot of wind, they are SLOW boats.
But no matter what it is going to be a different experience than the cat,so pick the one you like the most and have fun.