Hmm that's a tough call.

The Lenovo is a little cheaper. It also is upgradeable in the future should your gaming needs require it (spend 400 rm or so and go SLI potentially). It also has a lot of people on here using it so you're bound to get good support.

The MSI has a faster harddrive, with the specs on both these laptops I'd say that your hard drive will most likely be your bottleneck. Also as far as I know, MSI is more known to be a gaming laptop manufacturer, whereas this seems more like Lenovo's first foray into the gaming scene.

However, I have heard (unconfirmed) that MSI doesn't have good customer service. If you're gaming... things are going to break eventually. I'd look for something that has good customer service.

Personally, I'd go for Lenovo just for the amount of people who have it on here and because it has the potential to be upgradeable.