Recommend means some sort of mutually beneficial marketing agreement?
Nah, I'm not that much of a conspiracy theorist...
The Umik1 is the most popular on the US market, and it also happens to be very reasonably priced... so an easy product to recommend.
For those of us in other parts of the world, it can be a lot less of a bargain.
I have a somewhat more elderly calibration mic that requires a mic preamp - and my old mic-pre is PCI interface PC based - so not usable on my laptop where I run Dirac....so for now I am sticking with the AVR's supplied puck mic.