another vote for best appearance, but make sure you have dry lumber!!!! and then the breadboard ends will control your movement in width.. you can get cupping with the boards going in a best appearance set up if the lumber hasnt been acclimated to your area and shop first.. i had a top on a end table cup on me after glue up that was done for appearance it was corrected by rewetting the top and clamping it down flat actually past flat to allow for spring back..but it stayed after that in the position i wanted i hadnt let it acclimate in the shop first trying to hurry the project along along and paid for it ..
If in Doubt, Build it Stout!
One hand washes the other!
Don't put off today till tomorrow!