The choice of the type of table will depend on the number of people you have finally chosen and the type of assembly you have designed for the rest of the tables.
When you choose a round table and there are six of you, the ideal is to set up the assembly in a half moon. This is how you don’t turn your back on your guests.
If you finally have more than six people, you will have to take into account that by occupying the full diameter of the table, some guests may turn their backs on the rest of the guests. In those cases, I advise you to have your table in the middle. Being surrounded by tables won’t give you that feeling.
Rectangular tables are becoming more and more fashionable.
The advantage is that all the presidential diners are facing the guests; the disadvantage, which is why many couples discard this idea, is that the diners at the ends have more difficulty talking to each other. In this case, you must choose whether aesthetics or comfort prevails, taking into account that you do not usually spend too much time sitting at the table.