I have so many primers, but this one worked so well with the matching foundation that I just had to have it.
This primer has that silicon/gel feel to it and on the skin does create a little bit of that blurring effect, which helps minimize and smooth. The L'Oreal Matte Foundation then does glide across it and I feel like the foundation doesn't oxidise as quickly with this primer.
I will say, having tried all the range together, they do compliment each other really nicely, but if you can't justify the whole range, using any matte product should create a similar look (but I think L'Oreal's is the winner).
I found this primer to be an okay drugstore primer, but it doesn't do wonders for the skin - it is very thick and siliconey. It does start out by mattifying, but after a while starts to get oily. I found it worked fine with my L'Oreal foundation over the top.