If it was my cash, it'd be the Samsung 830.
I would go for the samsung 830, because it's cheaper most of the times.
But if you can find a Crucial m4 cheaper, and make sure it's not the "m4 slim". Then grab that one.
i approve of this (i have one and its awesome)If it was my cash, it'd be the Samsung 830.
^+1 They are both fantastic, although crucial do get less rma's so that may be something to think of
heres something to think about, do crucial get less RMA's cause they sell less Units as opposed to say Corsair