I will discuss this in three parts, the Wind Turbine itself, the Charge Controller, and Operating the device.
I was recommended this from EcoPower Shop as it would be quicker to connect and disconnect than the Rutland equivalent.
Note that I have not tested any other turbines yet, so I cannot compare it to others.
I have now used the turbine over a 3-week period. Half of this was at the War & Peace festival near Folkstone, where the maximum power I saw was 170W (but could have been slightly higher when I was not looking!), and the other half at the SHA 2017 festival in Holland, near a forest (not an ideal position), where the maximum power I got was 110W.
I also had ~180W of solar panels connected to the controller, which was feeding a 100AH PowerBrick+ LiFePO4 battery.
This battery was full at the start of the holiday.
During the holiday this setup kept a Waeco CFX-65 fridge in operation constantly, use of DeWalt 18V grinder (2 days of about 6AH each), and 3-4 geeks' devices (2 laptops & 4 phones) charged. We also used the system to power a small projector and 12V amp connected to 2 Bose Environmental speakers for 2-4 hours most nights, and kept various torches and worklamps charged.
It also included a day where I had to charge the 24V starter system for the vehicle from the 12V battery as I had not disconnected something and had to revive it from 21V before we could start the engine.
The optional 12V outputs from the controller seem to output at least 12.9V, which might be enough to charge a secondary battery, and I will try this soon.
The turbine certainly was quiet, and a few people commented that it was quieter than the one they had got (but can't remember the makes). Vibration was minimal, and we did not feel any from inside the vehicle.
The turbine is easy to set up, but connecting the 3 blades at the correct spacing should be a lot easier.
All I can really say about the controller is that it is the "least bad" that I have seen so far, which is not really a glowing recommendation. The Bluetooth capability is rather pointless due to range problems, and a remote display and interface like the Tracer MPPT HPST2210RN would have been more reliable.
It certainly performed well once the wind got up, but I wouldn't like to be around in the weather required for it to generate 400W!
See below for a picture of blade spacing:
Note inside the red box that it is possible for the blade to be moved several mm in each direction before tightening the bolts, which can make up to 1cm difference between the blade tips.