I am going to be purhchasing a used atv within the next 3 weeks, and wanted some input. Im 19, 5' 10 200lbs. Have had several 3 wheelers and a yamaha wolverine. The quad will be used mostly on logging trails/dirt roads, some pavement, and grass/normal terrain. I know the ex is fan cooled, and the z400 is liquid, and the pros and cons of both. And that the z has a little more power and supposedly eeks out the ex, but they are very close. If the raptor (excluding 2001's) is as reliable as the other two, provided it has been equally maintained, I would much rather have that. However, if those extra cc's come with problems, I'd rather have one of the other two. So, more or less, Im asking the reliability of a raptor vs. the other two, and overall which you think is better based on experience or friends experience. Thanks in advance, any help is appreciated.