I can't imagine applying foundation with anything else besides my beauty blender. It took me a while to try to this out as I thought the previous sponges were doing a good job, I stand corrected. These are amazing, takes applying foundation to a new level for me. The flawless finish I achieve with this beauty blender is unmatched. I got mine from dischem and it is a dupe but it works amazing and as good as the original which is way to expensive for my liking.
I love that it gets into all the curves and edges of my face and the fact that it doesn't absorb too much of my foundation. I use a cream foundation, haven't yet tried it with a liquid one.