matchlines, Keith.. :p
We use North/South/East/West elevations... generally we have one sheet dedicated to the elevations because we do mostly industrial stuff, and warehouses get big... also we often have more than one building on a facility, so we'll have an elevation sheet for each building..
We don't really follow a "rule" but I generally (and others follow my lead) put the "main" elevation (where the business end is) first, then put the opposite side next, followed by East then West, or North then South.
That's when they all fit nicely on one sheet, anyhow.