Hi Jane so glad you are here. I love D9P in fact just getting ready to start another one in blue, yellow and white. I think most in here prefer Warm and Natural batting. JoAnn's has it either by the package or by the roll. Watch for sales or coupons as it will be 40-50% off then.
I use Warm & Natural from JoAnns and buy it by the roll. A couple times a year it is over 50% off.
And check the web pricing which is sometimes lower than the store. And then you usually get free shipping.
I use warm & natural or warm & white, buy by the roll when on sale. Or when I have a 50% off coupon, and if your store does not have a roll when it is on sale they will order it for you and you get it at the sale price!!
That jacket that I loved so well. I made the mistake of using poly batting, (over 30 years ago) bit by bit it worked its way through the fabric. I was forever clipping off the "nerds". I swore off poly then.