I love the new big rulers the 12 1/2 x 24 and the 8 1/2 by 24 by Creative Grids. I would get the Clearly Slotted Triangle Trimmer ruler. I like it better then the Block Loc but do use both. Be sure when ordering from Amazon that all the rulers are sold by a reputable shop that has a website. I have accumulated a huge amount of rulers over the years of every brand and type. My favorite brand is Quilter's Select for basic sizes, CG for speciality size, and Missouri Star for templates and fun shapes.