This is really a brand positioning thing at this point given that Craftsman is a Stanley Black and Decker brand and they seem to have been massaging things with Dewalt toward the top and Craftsman a bit below that with PC kinda getting completely out of the focus if what folks are hearing is correct. The big purveyor of Craftsman tools at this point is Lowes, although the brand is available elsewhere.
When it comes to sanders, I learned long ago that better quality is a lot more comfortable to use. So if you can actually test for vibration, dust control, etc., that's a good thing.
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The most expensive tool is the one you buy "cheaply" and often...