If you don't like replacing batteries "phantom power" may be supplied from the 12V bus in the rig itself. Of course this requires a small modification to the amplifier board and a bit of rewiring to run power through an unused conductor in the cord, something best left to a proper technician if you don't want to let the smoke escape. I did it with my Astatic TUG-9 stand, simple enough but not for the unfamiliar poking around in the dark. Oh and don't worry about the 9V or older 7.5V batteries, the circuits will handle 12V easily.
"I really can't stand the feel of the mic that came with my CB, feels hollow and cheap..."
That's because it is hollow and cheap, when it comes to CB rigs in particular a microphone is almost an afterthought. If you don't want to go for a "power mic" you really don't need there are plenty of more "professional" mics available. Back in my CB daze I used a Shure 404B dynamic PA mic rugged as all heck and has a solid, hefty feel to it and everybody just loved the clear, smooth sounding audio.
Now when I said you don't really need a power mic I meant it quite literally unless you have to shout into the stock mic to be heard. With a few cheap exceptions most rigs are designed and set up for 100% modulation using the mic supplied, anything more only leads to over modulation, distortion and splattering onto other channels. When finally adjusted so they sound halfway decent, closer examination reveals its output is the same as one without a preamp, kid you not.