The most current fleece I got that wicks great from JoAnn's is antipill PLUSH fleece (not to be confused with regular anti-pill). It keeps it's thickness after many washes so there is a nice cushy dry layer between pig and absorbent material inside. And yeah, you definitely have to wait until they have a sale (and use a coupon) because the regular price is ridiculous.
I used to love the blizzard, but it seems over the past couple years it just doesn't wick very well no matter how many washes and no matter what absorbent material you use. It also seems to thin out more with washing which is frustrating.
So, I guess the key is to use any fleece you like and from anywhere you want to get it, BUT most importantly just make sure it is wicking properly. Wash it, then put your absorbent material under it, dribble some water on the fleece and check to make sure the water is pulled through the fleece and into the absorbent material underneath, rather than just puddling on top of the fleece.
If you like to sew and you are good at it, then you will definitely save yourself some money! Make enough cage size pads for two changes and LOTS of smaller pads to change out frequently from beds, under bottles (& bowls if using those), near the hay pile, and wherever else their favorite spot ends up being. Those areas get gross fairly quickly (usually change these pads twice a day). I use a 12 and 15 inch quilting square ruler to cut out fabric for these smaller pads.
I use a handheld vacuum to quickly clean poops twice a day. I use a silicone dishwashing glove to brush off hay from my pads over a trashcan before throwing in the wash. Hay comes off fairly easily.
If you get the guinea pigs before you get all your pads made, put down towels or incontinence pads and then put a large piece of fleece that is wicking over top. Use binder clips to clip the fleece all the way around the side of the coroplast (this will prevent your pigs from burrowing under the fleece). This is a nice temporary solution. The towels tend to smell more once wet, so you may have to change things out more frequently.