How much room do you have for the table and chairs? How big is the table, how many chairs? I think that would make the difference in choice between armed and armless :)) Personally, I would go armless because I would worry about scratches on the arms and I think it would be easier all around.

Table is 45 inch in diameter, not that much room around it

The tighter the space the more the arms are just a nuisance.