You asked two questions -
Buying a moble home WITH land is always better than a home in a park.
With a park you get:
* monthly rent that can go up
* rule about what you can/can't do with yard, fencing, etc
* rules about guests, pets etc
* possibility of sale of park - either new managment or closing the park leaving you with an old trailer to move and nowhere to go.
As for best place to live - you have to do some research:
http://www.bestplaces.net/
http://money.cnn.com/best/bplive/
http://www.gsa.gov/Portal/gsa/ep/contentView.do?programId=9704&channelId=-15943&ooid=16365&contentId=17943&pageTypeId=8203&contentType=GSA_BASIC&programPage=%2Fep%2Fprogram%2FgsaBasic.jsp&P=MTT