googling

"how many people can fit around a certain diameter table"

gets lots of answers....

Thx very much for that suggetsion. Just did it and to my surprise, question easily answered! Sometimes the glaringly obvious isn't that obvious (at least to me).

Choose your dining chairs first, then decide how large of a table you will need to arrange 8 chairs around the table.

According to my experience, if your plan is to have 8 people, go for the 60".

I am considering a round table for my kitchen as well - for my family of 7, + room for a guest or two. What size table did you go with? What Width chairs did you go with? and are you happy with the size?

It depends on your requirements and location where you going to place your table.