Which is better UMIK1or2 vs RME babyface pro and M30

Ethan has an article * comparing some mics. He uses a DPA because he's Ethan and had founded an acoustics company. I use the Behringer ECM8000.

Ethan summarized the differences by saying something along the lines of, "The higher end mics are like measuring your height to the millimeter." What he meant, based on the his published comparison, is that bass is the problem for most rooms and all of the mics are almost indistinguishable there. It's the high frequencies where they differ.

Don't take this as gospel but so long as you have enough absorption to get a decent low end response then, to handle your mid-to-high frequencies, all you have left is putting those panels in the right spots. In other words, having a more expensive mic isn't going to really help you in that regard.

I say this with the disclaimer that I am by no means a microphone expert. Having said that, any interface will suffice for measuring a room. An untreated room can have 40dB of variation whereas most interfaces are probably flat to within 0.5dB.

*I love how when Ethan takes measurements, it's a documented party whereas when I do it, it's just me crawling around in the dark, dusty and exceedingly cramped netherlands behind my desk.

Or impossible.  How flat is an anechoic chamber?  Even if it's within 1dB, a lot of people try to get by with 4-5 panels.  

Sad but true: the weak point isn't the converters, preamps, or even mics - especially when the room is small and reflective.  That said, I don't suggest taking acoustic measurements with an SM57.  The ECM8000 is cheaper anyway.

No, it would NOT its a dynamic and cardiod polarn pattern microphone. 

Whaaat?  Nooo!