Which Mac Mini for my needs?

Hey boys and girls!

I´m extremely tired of my HTPC. It´s loud, slow and it´s propably on it´s death bed. So I+m looking into getting med a Mac Mini since I have a MPB (older version) and both the wife and me have new iPhones. Seems logical to run the whole house on the same OS.

Anyway. We would like to use the Mini for both XBMC and as a desktop. Running XBMC on the TV and regular desktop on the smaller PC monitor. This will be possible with the new OSX update Mavericks (allowing two seperate full screen softwares at the same time). So the question is which Mini should I get?


What I want to do:

+ Run XBMC
+ General web browsing
+ Spotify, Hulu, Netflix etc.
+ Easy network access between all my devices
+ Run two seperate monitors (extended desktop view)

Things I want to know

+ Are the Intel HD graphics ok for HD video within XBMC?
+ Are the older Minis with nVidia better than the Intel graphics for XBMC?
+ Is the price difference between the new and an older model worth it?
+ What would you do?

Any help is much appreciated!