I only took out cover not so long ago and went with VIVAS, would have gone with BUPA but was afraid they would pull out as they have done since. I first thought they were a foreign company, not a very Irish sounding name. Understand they are backed by AIB and Dermot Desmond among others and 'stole' some top level staff from VHI. They appear to be more competitive and keep promising more than VHI.
Are they another Ryanair and VHI Aer Lingus, although am quite happy to fly Ryanair all the time now. I did it through a broker to try get a semi impartial opinion.