Bacuna has a better delivery IMO. He has hit the target 2 out of 2 I believe (Benteke first and Kozak just then)
I'm just not a fan off knocking the ball so far away from goal, Tonev can use both feet with pace and knock them into dangerous areas.
Remember it won't be a spur of the moment thing, we'll have corners planned and set-up, in which case Bacuna is delivering them well.