that 4WD is over rated. Now considering that without a front locking diff, a person really has 3WD and not true 4WD atv. Most of the newer ATV's are offering 2WD/4WD/4WD locked & true, alot of riders truly don't need a 4WD quad. However, what I have found is that although my old 2WD yamaha could go most of the places friends were going on their 4WD atv's, they did it more safely than I did. I'm not talking about mud holes, but about steep, rocky, difficult climbs.
I made most of the climbs in 2WD, but had to use alot of body english to motiviate the quad over large rocks. Timing, moving my weight around and hitting the gas got me up and over, but the 4WD quads simply got in 4WD low and slowly crawled up and over. Safety is something to consider if a person will be riding in steep, hilly, rocky or mountainous areas.