Truly beneficial in terms of what exactly? What version are you currently using? X1 I presume?
If you're going to upgrade eventually, and you have the funds, I'd do it now to be honest. Sure, there appear to be a few glitches here and there, but I'm getting along with it just fine. You can still use your X1 along side X2, if you feel that you're struggling with some of the X2 gripes. In the meantime you can be learning all the extra bells and whistles anyway.
A few things to consider, if you thing the $100 is a bit much. If you upgrade now you get $100 (a bit more than that) worth of strings samples for Dim Pro.
You also get a ProChannel version of Breverb, which, for me, is sounding nicer that Sonitus.
And you get R-Mix too, which is looking rather interesting. I'm currently in the process of learning how to use that tool for my own needs, and not for making karaoke tracks.
Automations Lanes are a fantastic addition, as for as I'm concerned and also the improved drawing and editing methods.
There have been a few complaints about not being to able to edit the colours of the interface as much as we have in the past. But if you're happy with how it looks now then that's not a problem.
Have a look at the video that is mentioned in the sticky area...