I hate spending time futzing around to get seams lined up when my blocks were a little big or a little small. However I also hate to have corners that don’t even come close to matching or points all cut off. I ended up buying an Accuquilt die cutter. I had to fine tune my sewing width because pieces needed to have an exact 1/4” seam instead of a scant 1/4”, but once I had that nailed, I no longer have to mess around with bad sized blocks. Really! HST, QSTs, flying geese, wedges, all kinds of things now match very well. I save so much time by not trimming.