I am doing measurement comparison among CLIO, REW and ARTA. CLIO system is widely used in the industry. It is not very expensive from a company view point, but expensive to DIY or tiny firms. I would like to see how REW and ARTA compared to the CLIO system. I will use miniDSP UMIK-1 USB mic to pick signal for REW and ARTA. I may acquire a high-quality USB audio interface (e.g. Presonus) to use the CLIO mic to get closer comparison.