It seems there has always been an odd man in the group. From what I remember it was KDK/Santec from the late 70s into the 80s. Then there was Azden and then there was Alinco. The other two never released an HF rig that I was aware of. They dabbled in the VHF/UHF HT and mobile business. Alinco started that way and they have added products over the years. I expected them to be gone after a few years like the other two.
Don't forget ADI/Pryme. Their stuff was junkier than Alinco's. Now we have the Chinese rigs, which are worse than ADI.