This how and why REI gets a bad name and reputation.

If we do need to move on, any recommendations for a reputable property manager?

Unfortunately, a number of these companies are already well off their all-time highs, such as the home builders and fixture manufacturers such as Masco or Fortune Brands. 

Darren,As Im sure you are aware now, manufacturers can have very different price points.

We did an inexpensive build (used manufactured homes) and built them to standards that the city said. 

That said, your best protection is to only work with reputable wholesalers, ideally ones who have done deals like this before.

I look for places with a favorable renter-to-owner ratios, low crime rates, good schools, etc. 3) Hire a realtor or locate a wholesaler with a good reputation.

He sent me this letter which contains many falsehoods and slandered my reputation within the community.  

For me personally, I'd rather work with a local lender who's capable of closing in 14 days or less and that has a reputation for closing on time (or early) even if it costs me a fractionally higher rate. 

You can choose a manufacturer and they will work with a builder of your choice or have builder they have worked with in the past.