It is a WHOLE different class of boat than an I52 in terms of robustness of build quality but the I52 will do better under sail in normal weather. Not so well in heavy stuff.
Thanks for the quick response arf145 and camaraderie... it was my first post!
Do I read your comments as:
ND56 = much better robustness and build, poorer light air performance, better in heavy weather
I52 = poorer build, better light air performance, not as good in heavy weather
I think old boats are old boats.... all systems need checking/replacement/repair to some extent, so I'm being realistic I think (and have owned a 20yo Duncanson 37 before).