Which chairs are more comfortable?

I don’t like the wishbone chairs with that table personally as they are delicate compared to the solid volume of the table, although I like the contrast of the black finish. On the other hand, benches are never comfortable. Do you have more of the brown wood chairs?

The wishbone chairs work better as captain's chairs but still three different seating options is one too much and the black is the odd man out. The bench does seem misused here as they are most effective or 'well' used when there is no room for the movement/space a chair requires. Your guests would prefer a chair. I can see how the wish bone melds with the rest of your decor but I really don't see them working with the other chairs in the dining room. Either or, I think would look best.

I like the black chairs and would get 2 more. Find another use for the bench.

Black will look the best. I'd take away the bench and use it elsewhere.

I agree with the others who are saying remove the bench and get two more chairs.

I really like the black chairs with your table and the two other wood chairs. I agree get two more black chairs, remove bench it throws everything off kilter.