I think one will find that the Excel's are a little more conservative in their decorating or glitz factor when compared to the DRV. I've always gotten the "this is nice" when touring an Excel, but a "Wow" when looking at DRV. Nothing to do with mechanical on either unit, just more of an aesthetic feeling with the DRV. Suppose its due to the darker woods and appliance use in the DRV with stainless fridge and so on.
Unsure about the DRV, but Excel does have their Limited line with full molded gel coated fiberglass roof. Then Excel also does the Rhino lined roof too.
Good choices, either one.