asus right now, msi got some heat issues, i heard from people that owns the laptop msi gt70 with 880m and that has problems. any laptop msi makes that uses that cooling solution is not recommended. heard much good from ASUS G750JZ owners.
actually MSI normally have quite good cooling - but they're more inconsistent
the ASUS ROG series laptops really are absolute beasts - if you've got the money and are willing to carry it I cannot recommend it enough.