Acer - On sale for $590, normally $800: http://bit.ly/2o4XNHJ
ASUS - On sale for $700, normally $1,000: http://bit.ly/2nyN3QM
MSI - $700, no sale: http://bit.ly/2mOtiG3
If you have the money now, I'd go with the ASUS. If you don't have $700 now but will later, go with the MSI. If $700 is too much, the Acer is probably your best bet.