I am trying to decide when to purchase the Mini now, or wait as well. I still have my 1st generation iPad, but it is showing it's age and it can't multitask very well which I need to have it run 2-3 Apps without logging then off. Same Apps work fine on my iPhone 4s as I need them too, I just need a bigger screen.
Once concern I have is when iOS 7 is released with it's "200 new features" is it going to impact the Mini like iOS 5 did for the original iPad model? I remember it was quite speedy when I first got it, now it seems clunky when typing and trying to use.
I am not overly concerned with the screen resolution as used to my iPad, but compared to a iPhone you can really see the difference, especially in text.
I need something portable for my work for when I am out, and a LTE Mini would be great for this.