Had the same HD shield on my SG at 6 1/2". I'm 5'6 and had no issues with sitting at riding position and seeing all I needed to over that. I had the opportunity to try the Freedom shield as another of our members sold their 7" dark tint. If I had ordered one, it would have been the 7" but in the light tint. However, this was a great deal and a chance to try out the Freedom unit. My only reason for looking was getting the wind a bit higher for my BSR. With it being 1/2" taller and the re-curve, The Freedom shield does cut into my field of vision a bit more BUT the optics through the shield are amazing so when/if I do look through it, there is no distortion as with the HD one I removed. In addition, the "flip" at the top of the Freedom unit put the brunt of the wind 6-8" higher off me which really helped out the BSR.
One more thing that I wasn't expecting. The stock HD shield reflected my CVO LED tank light and it was a distraction at night....I would actually tape a piece of cardboard over the CVO tank badge if I was out extended periods after dark. With the Freedom shield and the re-curve, the light reflection is gone.
They make a great product. When you decide, make sure to post a pic here. Good luck with your decision