When one decides that it's time to replace the dining table of the cabin there are two basic options. You have no right or wrong for your choice. The answer is within the hardware you are using. There are two basic choices:
The front is the articulated sidewall holder. When you change a table, this choice is many. When you buy this you want to buy an RV desktop kit. This set comes with a heavy metal hinge that moves up and down. When you move up, the table is supported with an adjustable leg. When one bends down, it rests on the dinette side mounts.
Many find this a lot easier because they do not have to take the table away from being thrown into bed. All you have to do is release the adjustable leg and then release the table wrist from the side wall. As you do, the bed descends to make the bed.
Author of this article finds the best choice for the swinging knob option. However, it is clear that the majority of people can favor the table's legs with horizontal or surface support.
The standing table legs are wheels and the length is between 18 and 25 inches. The legs fit into a base plate. The bases are identical when using the surface support. When using the substructure, the lower part actually falls into the floor and the upper is the standard surface.
When the dining room is lowered onto the bed, the table is raised upwards and the legs are removed. One then places the table up on the booth. This is just the reverse if you put the table back in its upright position.
I think the round RV table legs are only a little harder to handle than the articulated type. Another reason why the round style is more popular is that many manufacturers use this style. I think this can be because of the cost difference.
Both types of dinettes are found in Crossroads RV units such as Zinger Travel Trailers and Sunset Trail campers.
So, to which one is the best. I suggest you look at both decisions. Find out more about RV desktop feet at local RV dealerships or RV spare parts. Your best wishes.