Product review (3 stars): OK if you're persistent.
I received the item promptly, but I noticed that there was shipping damage to the carton that had been repaired which led me to believe that the unit was a return.  Upon opening the package, I saw that the moisture barrier had been opened and that loose components were not securely packed.  After inventorying the contents everything seemed to be included, but closer inspection revealed that a thermocouple (part of the safety shutoff system) had been damaged.
I emailed the supplier concerning these points and they responded with an explanation for the repackaging.  The unit is configured for LNG at the factory.  The vast majority of the units used in the USA are for natural gas and so they convert them at the warehouse (the LNG jets are included with the unit).
They asked for photos of the damage to ascertain the solution to the problem, which I supplied.  They concurred with the damage and said they would provide a replacement part, which they did.  I was able to effect the repair myself, although I suspect most people would require a service technician (it required dismantling the unit).  And, since I use propane,  I reinstalled the LNG jets at the same time.
It appears that the unit was designed to sit on a counter (it has feet installed on the bottom).  I installed it in the countertop (the usual USA arrangement) which created a problem.  The gas inlet is at the back edge and requires a 90 degree fitting to go down to the supply line.  There is not enough room to do that without removing a section of the countertop, a complicated task to avoid it showing on the surface.
After the installation was completed, there was a final problem.  Some  of the thermocouples were not installed correctly, resulting in the gas diffusers (the black thingys on top of the burners) to be slightly tilted.  This caused the flame to have an uneven distribution.  The solution was to adjust the thermocouples.
After all of these things were dealt with, the unit is quite acceptable.  The appearance is very good.  The flame distribution is different than the old style gas burners, but it seems effective.  The burner arrangement might be better (I would have preferred that the simmer burner be at the back) but perhaps it's a matter of getting used to it.  The large burner works quite well with a wok.  The glass surface is very easy to clean.
My experiences may not be typical.  The customer service was responsive and helpful.  And the price is significantly less than the name brand versions.