I'll pipe in. Barksdale played the best that I have ever seen him play. Saffold is a better player. IMO, you can't look at guys in terms of the best 5, even though I'd love to. This team doesn't have that luxury. We have a little Guard depth, we have very little Tackle depth. You need to find the best 7 or 8 that will dress every week, not just the best 5.
Long, Williams, Wells, Dahl, and Saffold are the 5. Barksdale is the swing tackle, he makes 6. Barnes is the backup Center, and he can play Guard from the sample that I saw last week, he's #7. Shelley Smith is currently #8, and the swing Guard. That is our best 8.
If Saffold were to switch to Guard, which I don't think is feasible for a lot of reasons (I do think he could play Guard), then it would kill our depth overall. Nsekhe is the only other guy that MIGHT be able to play OT, he can only play on the left, and week to week is inconsistent at that.