If you buy a six-seater, eight can usually be accommodated at a pinch — the larger the diameter, the more people can be seated. On the other hand, rectangular tables have limited seating spots due to the position of the table legs and because only one person can be seated at each end.
It is likely that you will take the new items with you and so it wont be a wasted spend and could end up selling your home if it helps to make the room appeal to buyers. If you dont take them with you and the buyers like the space, you could offer to sell them - this is particularly handy for first-time buyers.
If you fall in love with a metal or marble table, don’t be discouraged from buying it, but do think about how you might safely transport it. As suggested above, choose a small, round marble table, or go for a wooden table with detachable legs.
A secondhand wood table with a farmhouse or industrial heritage has already passed the test of time. Any scratches and nicks in the tabletop surface have mellowed into design details, becoming features to admire.