I changed from a Head Monster 78 to Head Rock n Roll 94 this year which was generally a very positive experience except for an increased tendency to catch an edge usually on fairly flat sections such as cut up traverses back to the lift.
I had the tips mildly detuned which didnt seem to make much difference. I know some of the problem was definitely my doing such as looking over my shoulder at merging trails but at other times it didnt seem to matter how far forward I was I could still catch an edge if running fairly flat.
I realise this sounds pretty gaperish but I progressed a lot this year and basically skied all areas of the mountain at good speed with no real problems and far fewer falls than previous seasons.
I probably wouldnt bother posting this question except one such caught edge resulted in a backwards head slam onto hard snow and even with a helmet I have a black hole in my memory for about an hour after the event, an experience Im not keen to repeat.
Oh and I have custom fitted boots, footbeds and liners...