Hi Mark,
The Sony ECM series lav mics are great workhorse microphones and I use them all the time when shooting news stories that involve inside vehicle shots. I don’t see why you’d even consider a boom mic insde the tight confines of an automobile. You can easily run the XLR ECM mics into the Beachtek then route them toeither your FX1 or the VX-2100 and get good reliable sound.
Wayne
