I have not tried the FMA, but I use this one:

http://www.vexacontrol.com/servoxciteref.html

Excellent unit, Mike Weidner found it.

As for a current meter I prefer an analog type, the old one I have from Custom Electronics is so sensitive I can detect missing gear teeth when I sweep the servo. They still make an analog unit, looks like they have added features to it.

http://www.horizonhobby.com/Products...ProdID=CEL1430