If you already have apple devices, I recommend sticking with apple. I have both the iPad and iPad mini, and I strongly suggest going with the full size iPad. It's completely worth it. The iPad mini is really over hyped.
If you have an iphone definitely get the mini. if you have a different phone then its a matter of preference. the ipad mini is a great tablet however you could get a cheaper tablet . also depends highly on what your using it for. email and social networking its great for reading its not the best .
If you have other apple devices the integration makes it really nice. It also is designed to be really easy to use. It doesn't allow for geeky customization as a lot of android tablets do but because the operating system is designed for the hardware it works really well.