I don't know if you plan on buying new or used, but be aware the rumors are that the current Hypermotard is going away, a new model will be announced soon and it will not be available with either of the current engines. New one is supposedly water cooled, 820cc, four valve, with about 115 HP. Lower seat, bigger gas tank. All rumors for now.
Not an issue if you were planning on buying a used one.
Also be aware that the 796 (well, mine anyway) will only go about 110 miles until the low fuel light comes on. If your five hour ride is on the interstate you're going to stop for gas three times... which will be fine because the stock seat isn't great for long rides anyway.