Being located in the UK you might have better luck getting your blades from Leitz. I've been using their hollow ground blades for melamine. The only difference to the the blade shown on the Amana site, in my case, is I went for a positive hook angle. The positive hook doesn't want to push the material up off the cutting table. Only minor downside is these blades cost a little more to sharpen. I mentioned this in another thread about getting a superior cut using melamine coated MDF instead of Melamine coated particle core, don't know if its available in your part of the world.
John