As I related over on the Escapee's Forum....MASA is no pressure, you either buy it or not. Skymed on the other hand gives you the high pressure business(not really high pressure) but they always give you the, "if you buy today, this minute, this is the price you'll pay" which I can do without. I think both products are about the same but MASA just seemed, to me, to be the better product/deal.
As was previously related, I hope I never have to use it and I also hope to get enough year's out of it(lifetime....meaning, God willing I live a few year's more) so it all seems worth it for the peace of mind.