How clever of you to turn #4 upside down. Very nice. 3 and 4 are perfect, though all of them are very, very pretty in their glistening ... and the sharpest spheres are in 3 and 4. Very good. None of my attempts to do the same have ever come out this well...
My favourite is also 4, but I don't think it was turned upside down, was it? I see the reflection in the waterdrop is the right way around, but I might be mistaken...