My previous experience with DRs has been with the stainless strings and I have liked the sounds of the Hi Beams and SS Lo Riders. They lasted a good while, but whatever DRs claims, they DO eat frets. A couple of sets of these and I saw noticeable wear. I could actually see the string winding marks etched in some of the frets. I've also tried the Extra Life and I found them too mellow for heavy rock and the coating prone to flaking off easily. I've used the Zebras on my acoustic guitar and they sound great, but wear quickly.
Maybe as a lover of the sound of new strings, but someone who doesn't like to change strings often I should switch to Elixir.
\m/