I wanted to love the Mini but it just doesn't seem like a complete product to me.
1. Color. It's noticeable. Does it matter in the long term? No. But, it's noticeable.
2. Not much more portable. Most will still need a bag for either iPad, so why compromise?
3. Text really clear but just too small...unless it's in a reading app where text can be sized readily and correctly. I don't want to rely on some stupid bookmarklet to half ass resize my text whilst browsing the web every time I need larger text.
4. Only $100 cheaper this time around, it makes going to the Air that much more of a no brainer.
So to be more concise, the Air is just as portable, better screen, bigger screen, faster (although one shouldn't base speed solely in their decision since the difference is so minimal), less expensive in comparison of last year's Mini and iPad 4, and overall a more complete experience.
Like I said, I gave both tablets a shot, and I can honestly afford both but my the rMini just doesn't have a place in my life. I've said it before, the rMinis looks and feels like an overblown e-reader. It's the ultimate iPad for reading (in a formatted app) and it does everything you can do in an iPad, but the size is just too restrictive for most things.