I think there are subtle differences here - let's focus on BWV vs VB.
First you can say that, roughly speaking - after adding the annualized upfront cost + annual dues, that the cost of owning either VB or BWV is about the same at about $17/pt/year±$1. So there's an argument to be made that at the prevailing prices and dues, just go ahead and rent what you need from another owner, which you can do in many cases at maybe just 10%-15% more. The difference is minimal, especially if it's not always annual visits that always involve a lot of points.
But if we're talking buying for location and room types, and ease of booking, if you look at the Field Guide
availability tables, you can see that getting the cottages at 7 months is not nearly as hard as getting the "hard to get" studios at BWV (i.e., resort and boardwalk view) or the studios at BCV - it's not even a close call... That argument doesn't help those who want to go during seasons when the cottages are harder to get at 7 months, but for owners like us who are flexible and within driving distance, I couldn't justify buying Vero even though we do go there (not to mention that the cottages for us and a bucket list item that I'd definitely do once or twice, but I wouldn't do on a regular basis anyway - they're pricy and I have other bucket list items to try out!)