Best 10 round AR-15 mags?

my 10 round p mag doesnt like to hold my bolt stop up... dont know if the spring is to stiff for it or the pmag spring is a tad weak to push it up... but my Stoner 10 rd works flawlessly.
 
While I love my pmags that I have. All 50. They are all 20 rounders. I do like the stoner 5 rounders because I can seat the bullet a little longer with them than the pmags and I can use them in states that have a mag restriction with out blocking the pmags.
 
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