I'm not sure where you are located in Western NC, but I know there are a lot of modular manufacturers around Asheville. There is one that I am familar with in Henderson called HandCrafted Homes. Their web site is:
http://www.handcraftedhomes.com/view.html
When they opened about 6 or 7 years ago in Henderson, I was invited to their open house. They let us inspect the factory, watch several "modules" get constructed; view how they get them on the trailers for delivery, etc. I was quite impressed.
The only suggestion I made to them was to offer 2x6 exterior walls versus only 2x4. I have not been back to know if they took my suggestion or not.
There is a development just outside of Fuquay that is all modular homes. I had no idea they were modulars until I went into the attic and the crawl space. The quality on the homes was outstanding. I'm not sure who they purchased their modulars from.
Look at HandCrafted Homes web site and look at some of their plans. Some of the pictures they have on the web site are really large and fancy. You can also ask them to send you a catalog. I don't think they will talk prices with the consumer unless you are a General Contractor.
I am around construction a lot as I am a licensed general contractor and a licensed home inspector. I put together a list of things to consider when you are building a home that I can send to you. Shoot me a PM with your email address and I'll send it to you.
It has things to consider, like making sure the water heater is close to the kitchen and bathrooms. A lot of times the water heater will be in the crawl space or basement on the opposite side of the house than the kitchen or master bedroom.
Another example is to make sure you install doors and hallways that are wide enough for a wheel chair. As we get older, we never know when an accident may happen and we are stuck in a wheel chair for a while. It costs very little to have all doors and hallways sized for wheel chairs when you are building, but retrofitting later is a major expense.
Best of luck with what ever you decide. Whether you go with a stick built or a modular, be sure to provide plenty of pictures for us to drool over.
Bob