I might be buying a 1997 Honda Forman 400 full time four wheel drive in a week or so. What are the pro's and con's to having a full time four wheel drive over one that can be taken in and out of four wheel drive? Also can this machine be driven on hard surface's like flat rocks, pavement, etc? I know my 4x4 truck should not be driven on pavement when it is in four wheel drive. Thank you to all who help me out. Northshore.