As always from me,Precision 23.Thanks very much for the thoughtful replies.
Over the next couple of weeks, I plan to put a comparison spreadsheet together with as much relevant information as possible embeded in it. I'll share it here once it's done. The candidate list is of course very fluid and does not include some of the more recent suggestions, but looks like this right now:
Beneteau First 23s
ComPac Eclipse/23 series
Hunter 26 (water ballast models)
WW Potter 19