My daughter played one year with Xiom Vega intro on her Primorac JPN.
Dunno much about non tacky wubbers
Is the X V Europe a nice next progress?
Her best skill forehand drive and backhand flicks.
Hmm, does
she want to change rubbers at all? Well, perhaps it's just a non-binding question in general...
Anyway, Vega Intro and Vega Europe are quite unlike. Intro is an entry-level Tensor with reduced catapult and a 47.5° sponge while the Europe is a softie, just like
@Novarac23 pointed out, at 42.5 sponge "hardness" with a soft topsheet.
If your daughter has really "mastered" the Vega Intro after a year, I don't really see a reason to replace it with the Europe. That wouldn't make much sense and would likely be a step in the wrong direction, if not to say a step backwards. The Europe is a fine bh rubber, again, just like
@Novarac23 mentioned, but that's about it. It's also a little trickier in the short game due to the fact that it has more catapult than the Intro, and even if she has outplayed the Intro, I would probably hesitate to use some of the more catapulty rubbers with a hard sponge...could be a frustrating experience.
Does the upgrade rubber need to be by Xiom? If so, you might want to look at the Vega Asia. It also has 47.5° sponge hardness and (coincidentally) the same topsheet as the Europe; or you could look at the newer Vega Hybrids...
If other brands are fine too, you might to take a look at the Rakza Z or the Joola Rhyzen Fire. They are not quite as demanding as some other rubbers out there, such as the MX-P or T05; even the regular Vega Pro
could be too much for her if she is not really used to catapulty rubbers. How old is she by the way?