Do you have to take the basic pack if you want the digital? Just something to be careful of. Just FYI Sky's basic (digital) service is €28.50 a month - free install/equipment (according to the leaflets I've seen around the place although Sky's website indicates otherwise). Does Chorus' 'lots more stuff' include movie or sports channels?
For the telephony side of things, UTV have a free off-peak service where you can have unlimited calls (as long as they're less than an hour) to local, national and UK. You just pay the line rental to UTV (you line is 'moved' from Eircom to UTV) and nothing more (nothing to Eircom). Alternatively if you make peak-time calls too, consider Euphony's €10 a month service. Again, unlimited number of calls as long as they're less than 1 hour long. Restricted to local and national calls though - no UK service included.
Hope that helps you make your decision.