I am interested in same thing. Well, Lenovo y50 has definitly the best GPU in compare with other products for less than 1000 CAD. TN panel is bad, but not terrible, as I saw with my own eyes. If your budget is this, than go forward Lenovo y50.
it might be worth to check out the asus 'repulblic of gamers' series.
They got top spec's for a good price.
I have had an asus G73Jh for many year and it was brilliant! mousepad was crap, when i picked up that heavy monster with one hand i thought it was gonna break in two, but it never failed me and had the best hardware for the lowest price i could find ( Europe ).