As with most alphabets, I like a little irregularity and these alphas has just that. They also come in several different colors so that you can use them on more than a few backgroundpapers!
They're easy to use as well. Just as regular stickers, you just peel them off and place them on your LO. I'm totally getting more of these!
I'm a big fan of letter stickers. I have two packs of these - pink and red. I love the loopy style and how easy they are to use. I also love that there's enough letters for more than one project. They're so inexpensive you can afford to stock up on a bunch of colors.