I read that it should be the same height or a little lower. I have a chair with ottoman and they are exactly the same height, it is very comfortable.

I have an L shaped leather sectional and bought a rectangular ottomen which is about 1/2" lower than the sofa, very close to the same height. It is a very comfortable height. I saw where you asked about where to get an ottoman. Most leather furniture stores will build one for you. I wanted a fabric one and ordered it thru Storehouse, but they carry leather as well and they were very good on price and quality. I don't know where you live, but in the Dallas area, Weirs often has samples, etc., of leather ottomens for excellent prices.

Unfortunately I didn't realize the importance of knowing the height of the two when I bought new furniture. Good for you for checking ahead of time! I bought my main seating pieces and ottoman at a very reputable store and just assumed the designer there would steer me in the right direction. She didn't: the chairs are low (16") and the ottomans are 20". In addition to that, the ottomans are sooooooooooo heavy they can hardly be moved. I am very disappointed. It is too late for me to do anything about it according to the store.

My couch is 18” and the ottomans I want are about 20” but are soft cushion that will give when you sit or have feet on them. Should I steer clear of this purchase bc of height difference?