This 21 foot Edge unit has the following upgrades/features (beyond the standard):  combination microwave/convection oven, additional outside storage, two 6-volt gel batteries, 1000 watt inverter, upsized axles.  The awning is brand new, installed one month ago.  The tires are a little over a year old.  The buyer should note that the standard full size bed has been modified to be two twin beds.