I use the sponge pretty much every day to blend in foundation and concealer. It gives a flawless naturel look. I'd definitely recommend the RT sponge, it makes blending foundation and concealer so easy. And with it's € 5,99 price tag, it is easy to fall in love with.
Overall, I'd say I'm continuing to use both the Beautyblender and Real Techniques Miracle Complexion Sponge to suit my needs.
Love,
N.