The mini should be a good reader, though I do have two hesitations. The really thin vertical borders because the Nexus 7 borders are already pretty small, and the resolution. It is around 160 ppi, but I can't really stand blocky text anymore personally. I think 200+ ppi is the sweet spot for tablets and at least 260+ ppi for phones.
By the way, the phenomenon you're describing may somewhat be explained here
http://arstechnica.com/science/2011...m-of-favorite-brands-as-threat-to-self-image/
It's is a good read about fanboyism and weird brand loyalty (even though a company doesn't care about you at all and they just want you to keep buying their products).