The Morgan 38, designed & built by Charlie Morgan, and the Nautical 39, designed by Charlie Morgan & Roger Warren (NOT the NWT Mine Bomber) for Nautical Development Corp are two very different
boats.
IMHO: The Morgan 38 was one of his better efforts overall - design & BUILD quality (always an issue with Morgan).
I know little about the Nautical 39, except IMHO she is a little ugly, and seems to take after the OI 41 (not a rave review).