A job that I was doing some telephone cabling work at uses those types of devices and they work just great for the application of extending an Ethernet line past the 90 meter. They had a couple pushing the signal close to 1000 ft and it provided a steady 100M. The cabling at this is was not in the best condition and it didn't seem to cause any problems.

Don't remember the brand though


Patrick T. Caezza
Santa Paula, CA 93060
C-7 - Low Voltage System Contractor - Lic# 992448