Sheila, not sure how much help I can be on the stem and handlebar thing. It's just such a personal preference thing. I usually ride a bit and try different lengths of stems and figure out what I want through trial and error, but that assumes you have a lot of time to putter around and a bag full of different stems to try, which I do. On the Jones bar, for instance, I didn't change stem length at all and it put my hands comfortably on the controls where I wanted them.

Also depends on your riding style, of course, and whether you like being stretched out a bit or whether you'd rather be in a more upright position. After my accident, I changed to shorter stems on a lot of bikes for a more upright position for the sake of my neck comfort. I like it that way and will probably stay there, now, since my riding has gotten more conservative. Getting in a low and aggressive crouch was almost a necessity when I was climbing boulders, hopping logs and doing jumps, but I'm now riding, dirt, only, both wheels on the ground at all times, as part of my resolution to ride safer. I now prefer MTBs with more traditional XC geometry and steeper angles than the now very popular trend for trail bikes with slacker geometry.

Okay, sorry for getting geeky on everyone. Interesting, though, how my accident has changed my tastes and preferences and needs as to what I bicycle, now. Definitely see myself headed back into a more traditional direction. Would like to save the fat bikes, for instance, for winter riding, only. That leaves me with a couple of single speeds for the bulk of my summer riding. Would like to have more options for my summer riding than that. We'll see.