Incarnate is great, I use it, Powerfull is great, I use it too.
They are both pretty tight, but keep in mind if you use Beta Alanine already there is little point to using Incarnate over another Cissus product.
Powerfull will help you sleep, a good choice if you have sleep issues.
Incarnate will help your joints, if that's an issue you have.
They both aid growth and recovery.
Don't let the reps choose for you, make your own choice based on what you want and your budget. (Not saying any reps here would do the wrong thing by the customer or anything, only that it is there job to answer questions about there products, if you don't provide them with a real question, all they can do is recommend you try it)