Hi Don.
The only monitors I would contemplate would be the AER's
But, they are hellishly expensive too.
Think I will stick to my little Ears!!
At least that way, I'm in complete control of what I'm hearing!
(depending on the competence of the Monitor/FOH engineer.
I picked up my Trantec system for less than 300 pounds sterling off E Bay, and the ear inserts were about 100 pounds, (I think)
A price worth paying IMHO for the peace of mind that they bring!!!!
Regards Ralphie