Check out this link in regard to reliability. I know that MSI isn't on there, but it should give you a good idea about Asus. I've never really heard anything bad about MSI. http://www.squaretrade.com/htm/pdf/SquareTrade_laptop_reliability_1109.pdf
If I were you, I'd probably go with the MSI, as it seems to be a better deal in regard to performance.