I live about five miles outside Dunshaughlin, heading towards Kilcock, and I am with ice broadband (mainly because Eircom could only offer dial-up... another story!). I am happy with the signal/connection. However, it is pricey at €37.99 a month (or €49.99 incl. Irl/UK/USA landline calls).
Being in town, you will probably have more options. Good luck with the move.