got a 50/1.8 today out of impulse, it totally smokes my tokina. i assume the 85/1.8 is just as good. i think my tokina can sell for at least 600++ which is just nice for the 85/1.8. currently i hav the tokina 12-24, 28-80 nikon 50/1.8, 70-200. or will it be a waste of $$ since my 70-200 will be more convinent?