Catalina 320 Experience
Henk's notes are worth pondering. Every boat design is a compromise over conflicting requirements of price, purpose (speed, endurance), stability (static & dynamic), & comfort (generally related to purpose). A very stable boat (static) may not be comfortable or safe (dynamic). Pin down what you want the boat for, how much you are willing to pay, and then go look at the various design-related parameters. The various rule-of-thumb parameters and usage-ratings often quoted are only general indicators not absolute guarantors. Also look hard at crew accomodations (not just bunks & galley, but hand-holds, walkways, rails, etc.) Consider how you would get from, say, the forward cabin bunk, into your foulies, and up to the helm with the boat tossing wildly in the rain. Consider how the boat will shed the water from a wave coming over from the bow (or stern).For a point-of-reference to your original question I sail a Catalina 320, wing keel, here in New England. It is a reasonably priced production coastal cruising boat (my purpose, price), and Catalina puts in fairly good quality & features for the money (design stability, etc.).I've had the boat out in 24-32 knot winds, with a single reef in the main & the Genoa furled to about 100%. Not a problem once you work out the right balance between sails & helm to get rid of any excess weather helm. Usually, an adjustment to the traveler will do. If the heeling gets a bit uncomfortable (Not dangerous or scary, it's just that I hate operating at an angle over 10 degrees!) I just ease the main a bit to de-power.I find pounding through short cycle (time/distance, peak-to-peak) waves rather uncomfortable. Long duration ocean swells are not bad, providing they don't get too high peak-to-trough. I did a 23 hour coastal passage from Portland, ME to Marblehead, MA this summer and coming home we had 22+ knots directly down the rhumb line with short cycle 3-5+ ft seas coming about 10 degrees off the port bow. Had to motor almost all the way (tacking all that distance under those conditions wasn't an option). We experienced mostly a pitch motion under those conditions; some roll but not excessive, all things considered. About every sixth wave slammed us hard into the trough, burying the nose into the oncoming wave, throwing water over the boat & spay into the helmsman's face (we even found a small fish jammed in my dodger!). Hope that helps. Go do the survey of price/purpose/etc. then try to take out a variety of boats from the affordable/desirable sample in as heavy weather as you can.--Rons/v Lady Jane