I'd have to agree with Toxic, the MSI seem to have the best hardware which, in laptops, is important for staying power. 12gb of ram is RIDICULOUS but will definitely be enough for the next couple years. They also have i7s, which are mighty powerful.
If you're looking to save some money, then go with the $1300 MSI. If you're fine spending $1800, then get the more powerful one (especially when you consider that the graphics card goes from 2gb to 4gb).