Originally posted by fishepa
"You've already seen what is below the 800, but you might also consider what is above, as well. The 820 is nearly identical except for the RST Capa suspension fork. The 4100 has an aluminum frame and the 4300 has the aluminum frame and I believe better components."
Would there be a good reason to go to the 820? Do I really need a suspension fork?
NO. I would actually recommend staying with the 800. I think you will like it.
A suspension fork will ad weight, and very little useable travel. The fork on the 820 tends to be stiff, and locks up in cold weather. The rigid fork of the 800 will keep the bike weight down, keep maintenance down, and if you do go offroading, it will help bike handling skills.