Chairs for Everyday Dining
The stackable set of 4 and the swivel-rocker sets both work at a dining table; the stackable chair is the only one with a published seat width, while the swivel-rocker sets add motion the stackable chair doesn't claim.
Two real candidates for a dining table
Of the four standalone chairs, the stackable set of 4 and the swivel-rocker set of 4 both suit a dining table - the fourth chair, the zero-gravity recliner, is built for lounging, not dining, per its own reclining, foldable design.
Fixed and stackable vs. swivel and rocking
See swivel rocker vs. stackable dining chairs for the full side-by-side. In short: the stackable chair states a 20 in seat width and stacks away between meals; the swivel-rocker chair adds 360° swivel and 15° rocking motion and a stated 400 lb per-chair capacity, with no seat width or stacking claim.
If storage between uses matters
The stackable set is the only one of the four built around that - useful if the dining chairs need to move indoors or into a smaller footprint when not in use.
If comfort during longer meals matters more
The swivel-rocker sets - available as a padded set of 2 or this standard set of 4 - add motion a fixed stackable chair doesn't offer, at the cost of not stacking away.
Questions
Which chair is best for daily meals at a table?
Either the stackable set of 4 or a swivel-rocker set, depending on whether storage between uses or swivel/rocking comfort matters more - see the direct comparison for the full breakdown.
Is the zero-gravity chair suitable for dining?
Not really - it's a reclining lounge chair, per its own listing, not a dining chair design.
Which chair is easiest to store?
The stackable set of 4 - it's the only one of the four chairs Amopatio describes as stackable.