JUST got 2015 RZR 900S – help accessorize please!

Hello, I have had a 2009 RZR 800 since new and now have added the 900s to the fleet. With TONS of options all all items there is certainly got to be a bunch of junk in each category. I trail / woods ride ONLY. What does anyone think is the BEST:

-Roof
-Shield (have had half on my 800 and its fine)
-Mirrors
-Stereo
-Door inserts

Thanks!