Smaller props for endurance set, less visible in final video and easier to balance. You won\'t get the best craftsmanship or the uber-stiffness of the T-Motor props, but you\'re also paying less than a third.
Not much to say here, props that do their job, at a nice price. You won't get the best craftsmanship or the uber-stiffness of the T-Motor props, but you're also paying less than a third so who are we to judge a book by its cover? There's a 13% efficiency penalty especially at hover, in fast forward flight it's reduced a bit. There's a higher top end speed, though, so it's not all bad.
The 14" props carry an extra advantage of not appearing in your footage at all and cause less vibration. Downside is an extra 3% efficiency penalty.