I've got a Kindle Fire HD and a Kindle e-ink reader. Husband has a Nexus 7.
So far as the two tablets are concerned, I've used the Nexus a lot but much prefer the Kindle Fire. It's far more user friendly in my opinion. I've had no trouble finding apps and have installed Dolphin & Opera browsers and Flash. A bit of searching the discussions section of Amazon's website is all that is required.
So far as reading is concerned I prefer e-ink. It's a more book-like experience.