Hey, glad to see you finally post. Most people that signup don't participate in my forums... it's cool though, people just wanna test their speed.
So, I have an LTE connection that can vary from a couple Mbps to over 50 Mbps. If you look at my stats and filter them right you can see my best on my iPhone on Verizon. When I'm getting 8 Mbps it still surfs great but when I'm able to pull 40+ page response is almost instant, the difference is great.
On my test bench when I develop my speed tests I purposly limit my connection varing levels to check accuracy. I've surfed the web and ran at every imaginable speed... it does make a difference, even for simple browsing.