I still have the original metal mini-blinds on the side saloon windows. I like them because you can open or close completely, pull them up out of the way, or open them such that they sun does or does not come in (winter/summer). On the aft doors, I replaced the mini blinds because they were always getting torn up by people running into them. I put cloth cellular shades there. Put Velcro on the bottom instead of brackets to hold them in place when closed. I paid extra to get the cordless ones; they simply go up or down and stay where you put them. The only down side is that they're either open or closed. No settings like mini-blinds where you can see out but keep the sun from coming directly in.
I also have the darkest limo tint available on the saloon windows. Nice for privacy and keeping the saloon cooler in the summer. In the pilothouse, I cut up sheets of foam/foil sheathing material used on houses to fit in all the windows in the summer, foil out. REALLY helps keep the boat cool and reduces AC bills.