I have some of the dies for my accuquilt and those are my preferred method for doing half squared triangles. I do have to be very accurate with my piecing and sometimes have to make sure that my seam allowance gives me the right finished size. and I do have be make sure when I position my fabric for the cutting, that lengthwise grain of the fabric is aligned with the direction of the cutting....but I really don't like trimming to size after, just seems like another extra step. I have one of the dies that was one I got when the accuquilt first came out where one of the triangles is a bit smaller than the rest....I have been meaning to just throw that die out and get a replacement as it is too late to send back to the factory for a replacement.