The ServoXciter EF has very good reviews in major R/C publications.
"The ServoXciter EF has many features that are great for checking servos and their gear trains, or for comparing and matching
servos or simply installing servos in your model. Try doing a range check with the glitch counter plugged into your receiver.
I think the ServoXciter EF has just about all the features you would ever need."
Cal Orr – September 2003 issue
"When a very clever, easy to use device like the Vexa ServoXciter comes along, it’s hard to find a reason NOT to get one."
Taylor Collins – Winter 2003 issue
"In my opinion, the ServoXciter is worth buying just for the ability to do the servo sweep test
and to check that the transmitter sticks are centering repeatedly. There are other features, and
they bear telling, but your writer is already convinced."
Dean Pappas – April 2004 issue