Wipes are such a personal choice, aren't they? LOL
I don't know what Cosco wipes are comparable to... so I don't know exactly what types of wipes you prefer... I HATED Pampers and Huggies wipes. They were too thick and dry for my liking. I used and loved Walmart's Parent's Choice brand wipes. They were a little thinner, and moister (is that a word? More moist? Sorry, brain fart.)
Anyhow, I prefer Parent's Choice from Walmart.
I don't carry baby wipes anymore, but still faithfully carry Wet Ones wherever I go... moved to the Wet Ones since they are antibacterial, and since we don't have to use them for butts (much) anymore, I prefer these now. I have a canister in the car, a pack in my purse, etc.