No doubt Northstar has a great rep...and they have been a round a long time
They are pretty basic, tanks are not that big, construction methods are old school. However, none of those things should rule them out if they work for you. They are a proven design.
We have had both wood and aluminum framed campers. There is not much difference to the user. I would not hesitate to buy a wood framed camper. In fact there are some advantages to wood (flex, thermal transfer).
If we were looking for a no frills, well built, camper for 2...we would consider NS.
Bill