I have bought four iPads.
2. I bought the iPad 2, which I still have. It's light and holds a charge for a long time, but it doesn't have LTE or a retina display. I keep it charged in the living room, and sometimes use it as a TV iPad.
3. I bought an iPad 3 with LTE, which is getting the lion's share of use. As has been pointed out by many, I didn't like it when I first got it. I still don't like it for the reasons I stated then. It's heavy, runs hot, and doesn't hold a charge very long and takes a long time to charge. Managing its battery is a problem. Yet it's the one I travel with, and the one I read in bed, and often is the living room iPad, because of the beautiful screen and because of the LTE. For me the quality of the screen is important because I have impaired vision. This is not a theoretical thing, not something to brush aside.
4. I have an iPad Mini, which to me seems a lot like the Kindle Fire I bought when it came out. I use it as little as I use the Kindle. Maybe that will change. Maybe not. When I got the iPad Mini, I put the Kindle on the coffee table too, so I could, if I wanted to, pick it up sometimes. I pick up neither. But get this Apple freaks -- the Kindle has a nicer screen. It's heavier. And it's not an iPad so I don't really know how to use it.
Disclaimers: YMMV. IMHO. AANW. (Apple assholes not welcome.)