I agree with Gene but succulents don't need a lot of root room. Three inch pots will be good for quite awhile for most of them. I tend to remember to replant when the pot tips over.
I think we all tend to over-obess about our plants. They have been doing fine on their own for millions of years. They will hang in there a little longer.
But just to confuse what I just said, in the ground, roots spread out just under the surface and take up every nutrient and every bit of moisture they can get their little roots on. There is no shut-off valve because nutrients and moisture are hard to come by.
In a pot, roots don't have room to spread AND you are the god of the garden - they get what you give. SO...the size of the pot doesn't matter (until it falls over). The care given does. If its rootbound, keeping up with water will be hard. If there's too much pot, keeping it from rotting will be harder.
Daisy