For me it all depends on which part of the season I'm hunting. Here in Washington we have two archery whitetail seasons, one in September and one in November/December.

During September the deer are still on their summer feeding patterns to so hunting field edges in the evening seems to work the best. But come November/December when the rut is really starting to kick in, it's best to have a few stands back in the timber where you're more likely to have a buck chase a doe past your stand.