Good investment with restrictions

I've been waiting extra long at the KING PRO with mE only competitors in the same level to compare: Phottix PocketWizard and ODIN. To make a long story short: all three devices perform their functions impeccably.
For the KING PRO I chose because it
the most functional of all devices has,
by far has the best price / performance ratio,
engaged in Khalia photo and are competent care.
All the functions described, such as iTTL, high-speed, balance, etc., work with my D700 and Nikon Speedlights without complaint. The devices are handier than the competition and processed very neat. The range is more than adequate. Despite the deductions listed below I would stay at KING PRO.

A star deduction there because
some menu items are not really ergonomically. When used continually get used to it, If rarely use the manual should be readily available.
The manual is available in English only.
the manufacturer's website is a disaster. Firmware for Nikon has been made available only on demand.
Has now indeed improved, the instructions (for PC) but is still insufficient.
Tip: It is important not to confuse the firmware of TX (transmitter) and RX (receiver). The filename of each firmware versions are all different. However, they are renamed with bottles in each device in "firmware.bin". Then when the transmitter briefly the installed version is displayed.
just the two strongest Yongnuo Flashes (in addition to a number other manufacturers) are not supported. This, however, as well as the optimization of some functions could be hopefully solved through firmware updates.