What I love most about MFB is depth of characters like Ginga (in the manga as his past has not yet been shown in the anime) and Hikaru (whose past has been shown in the anime but not in the manga) because it makes us understand them a lot more.
I like how for once the main character of Beyblade does not have such a happy reunion with his relative(s) since his father was fighting an enemy when they met and died soon after.
The vibrant colours and the amazing CGI of the characters, creatures, attacks and Beyblades of MFB make it (to my mind) a lot better animation-wise than the first two seasons of Bakuten Shoot (Beyblade 2002 and 2001).
Zanon's told me it's pretty good. I'll have to check it out when I'm not busy.
I cannot wait to see it for myself.