I try to avoid cutting and then having to sew triangles if at all possible. Sewing the bias can give you troubles. You say you are new to quilting so in case you're not aware of this there are lots of how to's on the net for creating blocks made of two or three or four triangles without ever having to cut or sew them. They are done by putting squares or rectangles face to face and stitching then cutting - you'd have to see the videos for the directions. So, having said all of that, maybe you'd want to invest in dies that cut squares, not triangles? I don't own one of these but have tried to imagine what I'd select if I did
Someone recently brought hers to a retreat and really appreciated the efficiency with which she got multiples cut for her project and she had realized how to cut her fabric for the machinne so as to really minimize waste.
Pat