Mandala is heavier and about the sound they have both great sound but strad have more vibration. Mandala have mellow sound on low range I think that is because of the bigger bell but it can give you brilliant sound on higher register.
They can not be compared because they are different designs, the mandala is a heavier design called pleiades 7 stars, but there are other lighter mandala models and there if you could make a better comparison with equal design
As I said on my first comment its just comparison of the trumpet that I have. Ok? Dont be too defensive. I dont have other trumpet to compare to your Mandala.
