[Jason]

Chiming in on my rear windshield from Pacific Eagle.

It's an awesome add-on in my opinion and I haven't had any issues to this point (granted, it's still winter and not dusty) with scratching. 

Just remember if you get mud on your windshield don't pull the mud clusters off by hand as they dry to the windshield.  That's a great way to scratch any windshield so be patient and use some water if you can.

[Sockman]

I picked up this one recently.  The ebayer couldn't tell me it would fit a 2017, but I couldn't find any differences in the cage/bed on the back between the 2015-2017 Zforce models.  Based on that, I pulled the trigger.  Mocked it up last night and it's a perfect fit.  With the 20% discount that was offered thru paypal credit, it was about $100.  Pretty reasonably priced.

[Diver]

I will be buying the  Pacific Eagle rear windshield before winter. I like the vent option and will get vents top and bottom .

[vman]

They also make a great soft rear window they fit extremely well, I have one with the roll-up center section which gives me the option to get a lot of air flowing through the cab when it's hot or to keep it down in dusty conditions, but either way I am sure you will be happy with their product.