Assuming you don't want to spend much money on Tv:
Go with terrestrial freeview unless you fancy taking a risk. We were able to upgrade our freesat - after a phone call from Sky- to the Entertainment subscription package for £5 a month for the next year, rather than £20 ish. Our Pace 2200 Sky digibox was £13,50 plus £8 postage on ebay. Check out the digitalspy satellite forums.
Freeview has a better channel line up, but more heavily compressed channels. Your girlfriend/wife will appreciate freeview better due to E4, ABC1, and you can enjoy svhs/digital sound straight into your receiver. Make the sensible choice.