By Edward Nawotka Have you been loyal to a single e-book device and platform or do you graze? I’ll admit, I’m neither device agnostic nor platform or retailer agnostic. I think of all the e-reading devices I own or have owned, including a Kindle (Gens 1 & 2), an iPad, a NookColor, a Franklin Reader, a Rocket E-book, and various smartphones, PCs …