For anyone who don't know, Prixtel is quite a good deal. My wife pays 2 euros a month. Have a look.
We use Leclerc Mobile, now operated by Réglo. Costs €2 per month if we don't use it and extra for calls. But as we only keep it for emergencies, it might not be worth the hassle of changing.
But for long distance and international calls, we have been using JaJah from our fixed phone and will miss it when they shut down the service at the end of the month. Guess it will have to be Skype. But that means having a computer always switched on. Not sure I want to buy an expensive VOIP phone, especially as it has to be in the same location as the router. Anyone got any suggestions?