My lapdock works very well to meet my needs. When we travel to Myrtle Beach the lapdock allows us to surf the web and keep up with email. The speeds are not blazing but it saves $50+ a month for internet access that would not be frequently used. I do not use it at home because it is more convenient to use my laptop with the programs I use frequently and the speeds are better. I find the lapdock is more convenient to use than my wife's android tablet. Also when I am waiting on my family while they are shopping or have a few minutes to spare while in the car, it is really convenient to use the lapdock.
I also use the hdmi cable to watch Netflix on the tv. The 3G service at the beach makes the video a little grainy especially during fast action scenes but it is not too bad. I look forward to getting 4g lte in the Asheville area to see what a difference this service will make.