840 Pro vs MX100

[Biernot]

I can get a used samsung 840 pro with 3+ years of warranty for 10$ less than a new Crucial MX100, capacity is 256GB.
What should I go for?

 

[rockie_]

Crucial MX100 256GB . Don't buy second hand things.
http://www.anandtech.com/bench/product/665?vs=1221
http://www.anandtech.com/bench/product/965?vs=1221