I'm prone to agree with cuniac: The build quality has really fallen in the past year and a half. I wouldn't doubt that the G75 would have been built more solidly (and looked prettier) than the g752. Add in issues with the overclocking, and we're seeing MSI as the winner here.
However, it would be a lot easier to shop by price point. Remember, the MSI is over a thousand dollars more. Do you really have an extra 15 hundred to blow? If not, the G752 wouldn't be bad.