Going off some other posts ive read here in regards to freezing, etc. I wanna order a card for my new m3i zero (yet to recieve). I have had the m3 real for years with a class 4 kingston in it. I would say has froze very very few times. I have been looking into a class 6 8gb Adata at newegg vs a class 4 8gb kingston. If it helps at all I am using a DSI XL.