Just my thoughts...
I have a COuntryman E6, the super-light, nearly invisible mic that everyone likes to use because it is so small. Most people from the 2nd row on back don't even realize I have a mic on....
PROS : Nearly invisible, super lightweight, decent sound.
CONS : Becuase it is so thin and small, the wiring is super-small and thin as well, thus I've had to have it serviced at least 3 times to repair breaks in the wire from when it gets hung up on something.
Granted, I have it hardwired to a standard XLR plug that is clipped to my belt, (I lead worship from my keyboard and never move the entire service becuase I run sound and record all the messages as well from my perch), I have a tendency to unhook from the XLR lead leaving just the XLR plug leading to the mic on me as I walk around, etc. More than once the excess cord hanging from my ear got hung on a pew, table, etc. while walking around and that was enough after a couple of times to break the wiring inside.When I went to prison ministry about 2 months ago, I had just gotten the mic out of the shop for the 3rd time since I've owned it for rewiring, when I had the XLR connection at the wrong angle, sat on it and have completely broken and destroyed the leads and circuitry around that area so now it's going to require placement of the entire part.... way more than I want to spend right now so it is in it's pouch waitintg on the day I decide to spend the extra money to have it fixed.
Bottom line : If you are careful with it and are going to maybe hook it to an actual battery pack/ transmitter on your belt in back so that the wire is not in a dangerous place, then it has been a great mic and I would recommend it to anyone. If you are not as careful and have a tendency to be around a bunch of stuff or move around a bunch, the wires could get broken and you could be stuck with repair bills or repairing it yourself on top of the $400 price tag of the mic itself plus whatever wireless set up you want to use it with.
Hope this helps....
Jeff