Ninja Foodi Dual or Flexi Drawer?

Thinking of jumping on the Ninja train, and wondered if the Flexi Drawer is worth the extra?
Not seen it mentioned much on here, is it a recent release or just not popular?

Also has anyone found they use the microwave less?
Understand less use of an oven, but can the Ninja heat things up well, or is that best left to a microwave?

Many thanks