I actually really like the Korres blush (It has no shimmer). I also have Tarte ones and though they last longer, I feel like the Korres blends better and has a more natural finish and by far is the best Peach i've found. The Korres blush in #18 peachy/pink is great the price tag is $24 however the Autum Sunset Color Collection has a full size included for $39, which is what I bought. It also comes with a full size illuminating powder, which I dust all over but you can use it just as a highlighter. It is a subtle shimmer not at all childish, I was worried I wouldn't like it since I generally like everything matte but it has quickly become a favorite. A full size coral lip gloss and a mini Anti-aging primer (smells like oranges) which really helps my makeup stay. I have verry sensitive skin and these cause no breakouts on top of being great products!
There are so many good ones -- I agree with the suggestions for Tarte's Amazonian Clay blushes! Tipsy and Blissful are both beautiful colors, and both are matte.
NARS Gina is a really pretty matte peach blush, and NARS Amour is a deeper peach/pink (also matte) -- it has more red in it, but it's still peachy on the cheeks.
Tarte! Tarte! Tarte! Their Amazonian Clay blushes are amazing and many of them are matte too!
Charisma is a rich coral, Tipsy is peachy coral, and Blissful is more of a pink coral!
I cannot get enough of those blushes!!!!
One of my all time faces is MAC Peaches blush. It's a must-have in my makeup bag.
Others I like are:
Cargo blush in Key Largo, Cannes and Laguna. These are very pigmented and will last you a while.
YSL's creme de blush is great too and they smell wonderful. if you have fair skin I would go with #1 Velvety Peach.
I hope that helps!
Have you tried any Illamasqua blushes? They have really great pigments and coloring to them and I'm a huge fan of how pretty they are!
I also suggest you try the MUFE HD Microfinish \blushes which only need a TINY dab of product to get a great color on the cheeks!
14 Star Struck (pale peach)
#6 Quickie (salmon pink shade)