The Behringer looks perfect. I'm actually using the calibration file for the RS Analog meter. I think it's working ok but I can't be sure if I'm getting accurate measurements. I posted them if you feel like checking them out.
Yes, if you do get a Galaxy and do not get the Behringer ECM8000 then you must go with the Galaxy 140. The 130 does not have a line out that is required to connect to REW.So how about just using the Galaxy SPL for calibration and measurements? Will that be a better option than a mic? or the RS SPL I currently use?