I've just got one questiion. . .
Why do you need five mic holders?
well Boyd let me tell ya- I've actually got 6, but only really
need 5 of them.

The one I could live without is the top left of the center of the dash, above the heater controls, but since it's either that or a "blank," I figure hey why not.
The two in the center console are great for on runs, on the highway, but if I need to dig something out of the center hole, or use that cupholder, then they can be in the way. Also given how touchy the Ham button is, it's possible that your drink can transmit for you.

That's a picture of my center console on Groucho's center console cupholder page
TallowPot Products (will put it below).
So I use the one above the radio for the Ham, and the one by my right knee for the CB, most all the time, with the ham being the most frequent to jump from the dash to the console. Also on a run I'll often have a passenger who may want to transmit occasionally, so having them on the center console or above the radio is within reach of both of us, which is handy.
Finally when the Ham is above the radio and an adjustment to the radio, or access to the ashtray is required, then I'll move the Ham to the center console. So as you can see having 4 (2 dash and 2 center) is pretty useful, two homes for each mic, and if it's in your way just move it to the other one.
And lastly, I've got one vertical one left of the steering column, near the mirror controls. Both mics will stretch above the steering wheel and clip to this one, which allows me to transmit without even removing it, just by bending down a little when standing outside the truck with the door open. This has come in handy several times on just about every run I'm on, during lunch, during a recovery situation where I'm out of the truck, or at the end of the day for camping/tailgating action to have the driver door open and be monitoring the 2m radio (which is direct wired so no key in the ignition going beeeeeeeeeeeeeep) and again if you need to talk back just walk up to the open door and talk away. I'm 5-10 w/ a 4" lift and 35's, and again it's pretty easy to bend down a few inches to speak right into the mic without removing it, which is dang handy if you have gloves on. And with the window open and the door closed, it's also super easy to reach in and grab it- again real handy if you do a lot of group runs where you want/need to get out, but still want to be able to quickly communicate if necessary.
So there you go,
use for 5 mic holders... and I got 6, but we all know MIB.