A good buddy had an ND60 and it was built like a tank and had all kinds of room. Systems were in BAD shape...needed new tankage, engine and electrical wiring and plumbing...but he had a nice boat when done. Sailed well in heavy weather and could take anything. VERY modest performance in lighter winds.
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.
No longer posting. Reach me by PM!