I am using a set:
For beginners like me its quite good, no need to optimize, no too expensiv (90 Euros) but no cheap bullshit, and the support is very good.
I had the problem when I changed the place of the antenna while the system was running I feeled tingly that here was a static or inductive tension on the base of the antenna.
After a few hours the owner of the shop gave a very practical response to avoid these problems.
As I am living in a penthouse of a flat, I have mounted the antenna on the corner of the flat roof, there is also no room for optimation.
Next step will be to install a outdoor weather station and to put it online with the raspi.