Does anyone have any experience using an Isovox vocal isolation booth? I live in an apartment building although it's a cement building the walls aren't well isolated. I can record using my Vox Tonelab with good results but I am reluctant to sing. I tend to sing loud. I'm most interested in muting my voice than total isolation. Also, my space is very limited. I had previously considered buying or building a Whisper Room type of booth. I just do not have the space.