Label vs BMFLabel cocos2d-x 3+

cocos2d-x C++
#1

in versions < 3.0 I always used BMFLabel since it was significantly faster.
Since cocos2d-x 3 there is a new version of Label.

Does this mean it now not recommended to use BMF?
If I should use still bmf how can I use it with new GUI?
for example button?

#2

I used to use LabelTTF. Then I switched to BMFont.

Label was re-worked in v3 to encompass all types and the old classes deprecated (but still usable).