Windscreen, Topbox and sliders

Hi guys, would appreciate some advice over here.
Im thinking of getting some accessories for mt07, namely the 3 component in the thread title.

I have narrowed down some selection choices and would appreciate some inputs and advice that would help me to make my decision easier.

Windscreen(Prefer aesthetic):
DPM
Rizoma
Ridea
(btw whats the difference between polycarbonate and aluminum?)

TopBox(Prefer aesthetic):
Aluminum GIVI
Aluminum TRAX (explorer)

Slider(Prefer quality):
Motovation
Rizoma

Thanks in advance man!