Ive been researching MHs for a year now.
In addition to picking a floor plan, you need to make a list of must haves and a list of deal killers. For example, most MHs in the SE are in Florida. If I buy from a dealer, I have to pay 6% sales tax, then another 6.6% here in Georgia. So a dealer MH in Florida is a deal killer for us. We must have a walk around queen bed that can be slept in with the slide closed. Also the fridge must be accessable with the slide closed.
Gas or diesel, age, carpet or tile or laminate flooring, 1 or 1.5 baths, washer/dryer, there are a bunch of factors to consider.
There are a lot of nice Class As in the 40-50k price range, many more than Class Cs in the same price range.
50k will buy something in the 03-10 year range. Thats 11-18 years old, even a low mileage rig will probably need some repair and maintenance. are you handy with working on vehicles or will you need to hire repairs/maintenance out?