If you're a person who's collecting her albums and singles anyway then in a general sense, no. Because you can always download that one new song. I don't really care about exclusive footage and all that jazz tbh so I'd rather just get MW + all the albums and call it a day.
The ONLY reason I'm considering buying the Best 2 Black and White CD+DVD's though is because they have Free and Easy, Real Me, Voyage, and some of her earlier videos that were released way before the standard CD+DVD format. I'm definitely considering A Ballads as well since the covers are beautiful and it's a crying shame not to have the incredible 'RAINBOW' on some type of physical CD, lol.