About the only considerations required are:
- It must be small
- It must be quiet
- It must look pretty (I need Wife sign off)
- It must handle playing and recording Freeview HD (and this is the likely gotcha)
What off the shelf alternatives are there? Would an EeeBox PC handle Freeview HD?
If I were to "build my own" would the current generation of Intel/AMD processors with on-board graphics handle Freeview? E.g: would this http://www.ascent.co.nz/productspecification.aspx?ItemID=396095 or http://www.ascent.co.nz/productspecification.aspx?ItemID=394911 handle Freeview?
And since I'm going tiny...how well do those USB DVB-T sticks work? As easy as a discrete card such as a 2200 I have currently?
Ta in advance