For a more interesting and unusual style of dining furniture, rustic bench seating should absolutely be considered, as it offers a beautifully unique aesthetic. Easy to combine with regular chairs, for a little diversity, bench seats are ideal for busy family homes, where the evening meal is considered to be a cherished moment of reflection and interaction. Children always enjoy a more fun style of furniture and with a bench seat, there's always room for one more guest.
One of the first things you will have to ask yourself is where you will be placing your dining table. A round table curiously seems to draw all elements that surround it towards it, thereby anchoring itself (and the chairs) visually more than a rectangular table would. It also takes up less space.