Ultra wide angles - tokina vs canon

Hi guys! I'm on the market for an UWA lens, i've come across 2 lenses that i'm interested in.

Tokina 11-16mm 2.8 ver2 (Can be bought 2nd hand at around 320euros)
vs
Canon 10-18mm 4.5-5.6 stm is ( Brand new around 200euros )
Going to be mounted on a 70d.

my question is, will the canon be better with the IS compared to the tokina with the 2.8/f. I will be using the lens mainly for portraits/landscapes/street and will be doing zero to little videos. Bokeh is a plus, I guess.

Thanks in advance for the help!