You have answered very well . They are both undervalued , both...

You have answered very well . They are both undervalued , both trade at large discounts to cash but they do also have some differences
Grr has a long life mine - very long and this after the tailings damn completion they will have longer capex ( unless the do the flux pellets path , but this will be underwritten by an off-take ) They are looking to diversify - but their cash is Lower and this options will be less .

MGX trade at a massive discount to cash , probably going to get bigger post insurance apt out but production without large capex limited to iron hill which has about 2 years. Therefore their need to get into something else is more pressing and thus news flow more likely. Their higher cash balance also increases choice of assets

Both have a chance for major Chinese shareholders to buy out Minority shareholders and thus holding both is prudent
I feel both are low risk , equally undervalued with a 40-50% upside possible within a year