Wheel width

[navigator32v]

So I traded in my navigator and purchased an '07 birch white h3 base about a month ago. I LOVE it and my wife does too. As I've always been a 4wheeler--I need some 35's. What width rim is everyone running? I've been looking at 16x10 and 16x8, but don't know of the advantages or disadvantages. Most wheels are offered in both. I like to have some tire sidewall, and I know that 4.5 inch backspacing is what works well. Sorry if this has been addressed, I ran a search and couldn't come up with an answer.