I'm assuming you have gotten the impression that the Enochian keys are powerful in empowering the soul, from the recent posts of some members on here. If you're looking for truely powerful words of power, use Sanskrit mantras they are on top of list, next are the Runes. The Enochian keys are lengthy and can be "time wasting" if you want to vibrate them repeatedly.
The planetary mantras are about the most powerful words of power we have currently. Their seed mantras also works wonders and you can vibrate a fully rosary into your chakras in short time. They are Sanskrit mantras.
Check these out:
http://www.angelfire.com/empire/serpentis666/Full_Meditation.html
http://www.angelfire.com/empire/serpentis666/Odin.html
http://www.groups-archive.com/viewtopic.php?f=2&t=149&p=153&hilit=words+of+power+ramadasa#p153
Honestly, it's all a suggestion so if you feel the Enochian keys are what you want then please go ahead. We're all individuals and out souls are different.