I've used both, and while BlendJet is more portable, I prefer the Ninja Blast for its power and larger capacity. It really depends on your needs - portability or performance. Both make great smoothies though!
I've used both, and while the BlendJet is more portable, I find the Ninja Blast has better blending power and consistency. It really depends on your needs - travel-friendly or home use. Both are good options overall.