Great question.
We've stayed in many deluxe resorts at the concierge level (GF/RPC for 2 weeks, Poly, YC, etc). IMHO, Disney does not do a good job in concierge. We have also stayed at many resorts around the world in concierge, and they have all been superior to WDW. We love the Four Seasons, especially the club floor in Maui, and the service is so much better. IMHO Disney concierge is not worth the $$$.
We decided to join the DVC because we love WDW. Our favorite resort is the BC/YC, so the BCV was a perfect fit for us. We want a good-sized room and the villas meet our needs. We joke that now that we provide our own snacks and make our own PS's, the service level has improved greatly!
I can also stumble from the bedroom in the morning and get coffee in the kitchen, as opposed to stumbling to a crowded lounge, scaring people and taking it back to the room! 
Good luck with your decision.
We've stayed in many deluxe resorts at the concierge level (GF/RPC for 2 weeks, Poly, YC, etc). IMHO, Disney does not do a good job in concierge. We have also stayed at many resorts around the world in concierge, and they have all been superior to WDW. We love the Four Seasons, especially the club floor in Maui, and the service is so much better. IMHO Disney concierge is not worth the $$$.
We decided to join the DVC because we love WDW. Our favorite resort is the BC/YC, so the BCV was a perfect fit for us. We want a good-sized room and the villas meet our needs. We joke that now that we provide our own snacks and make our own PS's, the service level has improved greatly!


Good luck with your decision.