The NB is going to push easier and should have more room. Most cruising Newmans are older highly finished heavy boats. My guess is a well maintained Newman can be a very good value if you don't mind a 12-15knt cruise.
Charles,Alot of the old Jarvis Newman boats were not built with high race type speeds in mind....most had small power by todays standards..having 3 to 1 ratio (length to width).they push along easy.....but it like comparing apples to oranges....Newman.... old design .......Northern bay ...new design
FVSD and MDI45- thanks to both of you for your comments. The JN is a bit narrower so I guess that explains the volume advantage of the NB. The JN I'm looking at is in Md and was repowered with a Yanmar 370. Seems like a good match up. The NB I'm looking at only has a JD 6068 220hp, but the owner says it cruises at 12-14, which is OK with me- former sailer. The JN will probably have a 14-15 kt cruising speed. I wonder about which one will be more fuel efficient- I would think the NB. Looking at the NB again this weekend. Thanks again.
In comparing the 2 boats you mention check the engine specs I am not an expert but I believe the JD may be more fuel efficient. The boat in Maryland looks nice, it has been on the market a while. Not sure what you are looking for but there is a jn 36 for sale at Pendleton yacht yard that looks real nice. 2 others if you are interested. 1 at classic boat shop. Fly bridge looks very nice and well maintained. Also Newman and Gray have a hull and a 350 yanmar package and will build to your specs. Pendleton, Classic Boat Shop, and Newman and Gray are all terrific shops. Good luck and happy hunting.