First, I just want to say that I LOVE the finish on my polished SS Freedom plate. I know it's silly and it's just cosmetic, but it just looks ... sexy! It is a thing of beauty. If you are the type that enjoys having someone notice your gear and say "hey, that looks really cool. What is that?" then you definitely should get the polished version.
But, if you're the type to buy a Ferrari and have it delivered in primer, then by all means, get the matte Freedom plate....
And about this:
I just wanted to throw in a thought based on my personal experience.
I got my plate with the old rail. It worked fine, but I decided I wanted to try it with the tank closer to my body, so I took the rail off and did a whole week of diving on a Blackbeard's cruise with the plate, 18# VDH wing, and no rail (or wedge). It was great! But, I eventually realized that, while it felt fine, it was not AS stable as it could be because the bottom of the tank was actually resting on my butt. Gluteal Roll Control? Anyone? Beuller? But I digress...
The point is, the lower part of the Freedom plate was not actually touching my back at all. A buddy touch a picture and you could see a clear gap between my lower back and the bottom portion of the plate. The bottom of the tank resting on my butt was holding the plate up away from my back.
I got a regular wedge from Eric before I went to Cozumel for a week this past Christmas. That is The Ticket. You can look at it as holding the tank up off your butt. OR, you can look at it as pushing the bottom part of the plate into the small of your back. That is how it works for me and it finally made the Freedom plate a perfect fit for me.
I think this issue is likely to be the case for anyone with anything more than Noassatol. And even for those that have Posterior Kansas Disorder, if you're diving in flat trim and arching your back, you'll probably still find that a wedge will help ensure a solid and stable connection between your body and the plate.
I actually think this is an opportunity for people to really dial in the fit on their Freedom plate to their body. Try it. If your back is sufficiently curved in the lumbar area, the wedge might not be tall enough for you. You might actually get a better fit if you get a longer bolt and stack some fender washers or something under the wedge as a spacer, to create even more height between the plate and the tank. Just a thought there...