I bought both of my Olfa 23 x 35 with coupons many, many, many years ago. I used to sew alot of clothes and I needed the length for slacks and shirts. Back then they were only about $35 each without a coupon (I'm really dating my mats - :oops: ). You should get the biggest mat you can afford. Use your dinner table as you work surface and you don't have to worry about it hanging over. Before I had a designated cutting table I used to store mine flat against the wall behind a desk or bookcase. Just don't store it next to a heat source as they will warp.