I've been using DR Low riders myself for a long time. I loaded a fresh set on about a month ago and have been pounding them for the last 3 weeks ( 3 hours a day exploring the capabilities of my WTDI + performances on weekends). They're still hanging in there, no dead soldiers yet. I'll change them out before my next gig though, but they are plenty good enough for spares. My problem with these strings is the local music stores, and the big box stores, are always out of stock. Oh they have plenty of of other DR strings, like those previously mentioned High Beams, the worst sounding strings I've heard since they put plastic tape on strings back in the 60's
Also, for a mail order store, try: Stringsandbeyond.com Good folks and great prices.