I bought Wonder Under or Pellon (which really irritated me, trying to get it loose for the other side) because it was all I knew, tried Heat and Bond and found it is so much easier to use. Easier to peel, easier to press, etc. I bought it at Joann's and now they don't carry it anymore, but I found it cheap on eBay.
Originally Posted by
Scissor Queen
I was a dedicated Wonder Under user until I took a class and the instructor had little kits with Heat 'n Bond lite. I don't think it's any softer but the edges of the applique are bonded better and you get a whole lot less edge fraying.