The only issue with Diam and M23 for an aging boomer is the same issue that is with Humdinger; they take a long time to get from trailer to sailing. Now, for some people the work involved in getting ready to sail is enjoyable, but aging boomers don't like wasting time of which they have short supply. Confess that the searail is also slower to get from trailer to sailing than I'd prefer despite 4 years of making things simpler. I do concur, though, that a Diam is fastest for its length than any comparable boat. Well, maybe the venerable F25c would be close and easier to get from trailer to sailing. Perhaps that's the sweet spot, build new F25Cs in all carbon--but the price tag would be higher than the F22r.