I owned an Omni VI for many years and had both the TT 705 desk mic and an old Shure 444. After many A/B tests between those two mics I ended up using only the 444. I have also found that my Shure 444 was the best match for great transmitted audio with my Ten Tec Pegasus which has some of the best audio you will hear on the bands. 73, George, W6JC