I researched new shin guards and finally pulled the trigger on the V3 Carbon Fiber Pro Guards when I needed to replace my old guards. When they arrived, I was a little concerned at how light, thin, and simple they were... those concerns were all set aside in my second indoor game when I got kicked so hard that in any other guards I would have been hurting. I walked away from that foul with no pain, an imprint of the diamond cushion on my shin, and a healthy respect for the V3 Carbon guards. The fact that they are super slim and extremely light are fantastic features and since I use tape to hold all my guards in place, I had no issue with them moving around.
For me, they're definitely worth the price if they hold up as promised over time.