My wife and I purchased 2 of the 2014 DS bikes.
Mine has the 25T drive sprocket, Power Tank, SoundRacer, ostrich leather seat, and custom paint with windshield. My wife's DS is completely stock. The bikes are weekend fun vehicles, and we average ~1,000 mi/yr. We ride the Santa Cruz forests and enjoy the quiet aspect, as do the animals that often allow us within 20-50'. I'm sure the bicyclists appreciate the lack of noise on windy mountainous roads, too! It is her first bike, and my 10th, or so (traded in a HD XR1200), and we love the torque and quiet characteristics.
My bike has minor, although consistent through several shop visits, BMS issues related to not charging all the way (solved by unplugging and re-plugging the power cord), and now, with the latest firmware upgrade, always showing starting charge as 100%, even when it may really be down to 20%. That is, discharging to, say, 20% and stopping for a break, then starting out again will result in a 100% charge indication that appears to resolve, after 15 minutes, or so, to the actual charge level (less than 20%, in this example). A minor irritant, and the bike rides well!
My wife's new bike suffered a battery contactor issue on the ride home from the shop, and on the day of the purchase, breaking her heart:-( It was resolved a few weeks later and has been perfect ever since, and she is in love with it, again!
We are very environmentally sensitive (also have CNG cars) and pro-electric, with 6kw home rooftop solar panels, and I expect to purchase a 2016 DSR this year, mainly for the ABS brakes and higher-torque system. Just Love that torque!
Go Zero, go!