Recently, there was some polyester batting on sale at Joann's. I had used some medium loft polyester batting before and it came out nicely but this was a different brand on sale. I wasn't really thinking that perhaps not all battings are created equal so I bought some for my next three projects. :? The first project came out nice but after a few washings, it went flat. Now, I'm finishing the second quilt top and not sure what to do. I'd like to do the sandwiching today since I won't have any time in the next few weeks, but I also can't run to the nearest Joann's today...it's over 20 miles away. Should I take the last two of these battings and try to use them together, one on top of the other, to make it thicker or not?