If you have one formal and one casual dining space, you can really go to town with different chair designs for both. A casual spot will do best with sociable, comfy seating that naturally leads to conversation, whereas a formal setting is where you can play around with luxury fabrics. If you only have one dining room, you're going to need to combine all of these elements in one set of chairs, if possible!
Finally, we had to lavish some well deserved praise on farmhouse dining chairs, as they naturally exude a certain homely charm that is impossible to resist. Usually made from simple pine and with an unfussy design, a coat of shabby chic pastel paint and a coat of furniture wax can really make them come alive. Tie-on cushion pads complete the look and add an extra level of comfort as well.