Depends what else you have and on your needs. For me, the iPad mini is in a no-need void. I'll have iPhone for pocket portability, and there would be no point in getting a non-retina iPad with smaller screen.
People keep saying the 10" iPad is awkward for reading etc, heavy to hold.
Simple solution: hoverbar, or something similar. I have 2 hoverbars, one in my bedroom, makes reading in bed really easy ... And posting to this site, as I am doing right now. It also keeps the iPad safe.
The other hoverbar moves around ... Kitchen, when using iPad for recipes etc; car for GPS, in office attached to my iMac, side table beside my big comfy research chair (where I do a lot of reading and note-taking), and attached to an outdoor table on veranda when I want to write out there with Bluetooth keyboard, the iPad at eye level on the hoverbar.
It's really easy to move and adjust, and I am hardly ever holding the iPad, it's brilliant, and in all these situations the iPad mini screen would be too small.