@moonwalker61 - Well, if its' for the "little one" (Even though he may not be...
) just remember the CB stands for
Constantly
Buying.
He will find several "brand"s of Echo mikes are nothing but repacked goods from another dealer. They are the same board only a different package or label - They will sound pretty much the same.
For better quality, you get into some pretty serious stuff and $$$ to go along with it.
CB though, is not the quality receiver you get in radios - it's for voice and that means keep it simple for him and let him find the handset or base / desk mike he wants. But just remember the innards are going to be pretty much the same.
Some mikes are more "Reverb" (Reverberation - short echo - small room type) while others focus more of the ECHO delay ( Long repeat nearly entire word with ability to change Tempo and cadence ) but can also do the Reverb onto the sample and repeat.
Cobra Echo is one of the cheapest, but the Sadelta Echo Max brands are higher in quality and features but to ignore the more simpler PA system processing side like for Audio Entertainment systems - he could miss out on something in that realm that he could use for his efforts.
Magnum, Palomar, Diesel, Barjan - RF Limited these all are around floating about shops - some are older brand names that merged with others like Barjan to sell out of the business but their stock of, New Old Stock. And even used - types are still around so you're kinda in a latter throes of a market that once thrived with these things - repeating everything everyone else says - not unlike Steve Martins "Repeat After Me" Non-Conformist Oath of "Not To Repeat Things Other People Say"....
...Just another wild and crazy guy...
See the first sentence in this post for a refresher - it's never easy...
To direct you to one type would not be fair - he needs to learn the ropes of the Echo process and how to work it. For if he doesn't - he would not know what really makes those things work and challenge him for his ability to understand, entertain and use them - he'd never be truly satisfied.
You may have a Monster on your hands - you sure you want to do this?