I decided to use in-ear monitors , because of the size of band I play with, there are so many open mics that wedge fold back causes so many sound issues. I looked at wireless in ear, but the frequency response is poor compared to wired, (unless you send BIG money), because I'm a drummer wireless wasn't really necessary . After comparing specs of just about every wired system I could find, I chose the Fischer Amp2. The ability to pan the channels or just have a mono mix, was ideal for separating the band so I have a more natural soundstage in my ears. There is an aux input, so I can add a click track without using up a stereo channel, and I can adjust the aux level independently of the main mix. There is an output for a low frequency transducer ( ButtKicker )with a built in crossover.
I use this amp with the Fischer remote volume control ( worth the extra outlay), which allows me to keep the amp in a rack with all my other electronics to the side of the stage, and adjust the volume from a belt-clip.
When I purchased this amp, I wasn't certain how I would get on with in-ear monitoring, so I paired it with Shure 215 monitors( so not too much money wasted if I didn't like it).
But, now I can say I am a convert to in-ear, the sound quality is amazing, the adjustability is fantastic, the ability to control MY fold back volume is superb.
THE best thing is that everything is done at a lower volume, so my ears don't ring at the end of a gig, or practice anymore. I wish I had gone down this route sooner, maybe I wouldn't have tinnitus now.
If you are still reading this review, you are serious about in-ear monitors, look no further you have just found what you need.