I just purchased 6 rolls of Serilor, 3 single (65-75-85) and 3 rolls of triple (55/90/55, 65/90/65, and 75/90/75), I've cut up most of the 65/90/65 already and been using that for most of the general work. Not sure how much I will use the single 85 if at all but though I would get some anyways. In my own opinion, the 65/90/65 will be used most often, then probably some straight 75 and 65. Never tried the 55/90/55 and actually anxious to try it out as its fairly new. Hope this helps