Yeah pretty much...JTAGs/RGHs are awesome and allow you to EVERYTHING but go on Live, the other hacking methods allow most things but also Live access so it depends what you really want it for.
I personally have a JTAG, flashed console and an untouched stock Slim for online...but not everyone is as weird as me
You can't go wrong with either but from my experience, I couldn't be without my JTAG as opposed to the others.