I shopped those two units for 2015/2016 so my info may not be true for 2013. I found both to be awesome coach's but the DS out spec's the Bago in some areas. The Bago will have a 15,600 front axle and the DS will have a 17K. Be advised the Bago is close to the limit the day it leaves the factory. The DS also has a side radiator vs rear with the Bago. The DS has three 15K AC/pumps while the Bago uses 13.5's. The DS uses 315 tires all around while I believe the Bago uses 285 (better ride). Then there is the comfort drive. Bago uses an in wall slide system on the smaller slides Newmar doesn't on the DS. Our favorite floor plan was in the Bago (42E) so we had to change our priorities a bit to end up with the DS.
Bill & Kelli 2015 Dutch Star 4366
2002 Safari Zanzibar 3906
1995 Fleetwood Bounder 36JD