My mistake, I thought the format for continuous and peak was xc/xc.
I mean I need 4c continuous and 10c peak. Yup headways are what I'm looking for, I'm just trying to find if there's a deal out there where I could get them cheaper than 19$ ea. I've been looking around without too much luck.
it's tempting to buy cheap, and that's ok if you are just looking to test stuff... but if you want the best possible chance at a reliable, trouble free pack, it's best to pay a bit more for reputation.