You can search youtube and it seems like everybody has a review on BE's matte foundation. So if you want detailed reviews of how the product feels and looks, go to youtube. I am writing to comment on matte-specific application tips.
First of all, get color matched even if you're switching from the original formula. The matte foundation colors are slightly darker than the original formula's colors.
Second, pick your brush carefully. Brushes with denser bristles seem to work better. The Flawless Application brush doesn't work that well for the matte. The foundation will look chalky and it won't last. The Full Flawless Application brush works better. The staying power is increased and it looks smoother. This brush works well if you don't have a Handy Buki or a Cover FX #160. However, I have found that I get the best application from either the Handy Buki or the Cover FX brush. The foundation looks smoother, lasts longer, and absorbs more oil. I feel like I get better coverage with these brushes if I start applying in my trouble areas first and blending out from there each time I swirl my brush in foundation.
I would also recommend a light application of mineral veil over the foundation even though a lot of people who have reviewed it say it's not necessary. It certainly is if your skin is as oily as mine. How can you tell? Do you have blotting sheets? When it's time to blot, how many sheets does it take to mattify your face? I need two. Three if I put it off for too long. Typically in one work day, I blot twice. Without MV, I blot at least one more time (two if the weather's hot). That's a lot of blotting sheets. And I like the soft Boscia blotting linens, which are slightly more expensive than the Neutrogena ones, which I think are rubbery and yucky.
Everybody has their own concealing tips and tricks. I didn't find it necessary to change the way I concealed after switching to matte, so I won't go into that here.
Cost: $28. Three dollars more than the original. Three dollars is not the worst cost increase in the world. An extra $3 gets you much better oil control than the original formula. The sifter is AMAZING, and the foundation is bismuth free and has rare minerals. I think the cost increase is because of the rare minerals. If it's because of the sifter, we'll all be in for a surprise when the sifters start showing up in the regular foundation jars. Try matte if you are curious, if you have oily skin, or if you think bismuth is giving you the itchies.
Sephora is still having their friends and family sale through November 2nd, and Bare Escentuals is having their friends and family sale either the last weekend of November or first weekend of December. The sales are a great time to try it or stock up because everything is 20% off! Can I get some confetti?