Ipad mini's less pixel density did not affect me at all. I still think the its display is really good. I think u need to check it out in real time.
Plus its got a 7.9" display, which is just the right size and better than a 7" & 10". Thats the reason u see a sudden shift with major brands coming up with ~8" display sizes.
Get Ipad mini, if,
- you want a good product overall. (Reading books, browsing, videos, gaming but maybe not too hardcore maybe. Fifa 13, NFS work well on mine)
- you like the user experience of iOS.
- need a good primary cam for casual photography.
Get Nexus 7, if
- u care about the raw processing power
- you are disturbed by the fact that u've got fewer pixels on you(even though it doesn't affect the user experience).
- u dont need any sort of software customizations, and user friendliness not of much concern.
- need to save ~5k.
If u can wait for maybe 1-2 month, u may find the Nexus 7.7 or Galaxy Note 8.0 to be a perfect fit.
A. I already pointed it out ios optimization makes the nexus hardware irrelevant.
B. It does, its like this, you're used to play games at 20FPS, you won't find any issues, but for those of use who play at 60FPS it will be discomforting. A lower PPI screen will have terrible jagged edges on fonts when reading books, or watching movies, after 250PPI the metric starts to become irrelevant, and after 300PPI is doesn't matter any more.
C. Software customization? Android is the holy grail of software customization, you don't like the launcher? Change it, you don't like the homescreen? Swap it, you don't like firmware? Change it. Can you do these in iOS? And android OS is user friendly enough, specially JB.
D. Agreed.