Never shot a Tru-fire before, but have been shooting the Tru-ball for the past 4 years. I also use one of the metal loops on the string, so there is no wear on the string. As I stated, I know nothing about the Tru-fire, but the Tru-ball has an adjustable trigger so you can set it as light or hard as you want to. As long as the quality of the Tru-fire is as good as the Tru-ball, go with what fits and functions best to you. One thing I can tell ya about the Tru-ball is it's worry free, no problems at all.

Hope this helps...

GB

Smack 'em where it hurts!