Currently there are two live and supported Gallery add-ons available for XenForo:
XenGallery by @sonnb
Xen Media Gallery by @Chris D
The problem to me is that those both came bloated of useless features that regular forum members will probably never use. In fact I think that while XenForo tries hard to make the UI as easy and less cluttered possible, the current Gallery add-ons destroy this principle immediately.
I'm still running vBulletin 3.8.5 and one of the reasons why I'm still on this software is because I miss a basic User Album feature like the one that comes with the stock vBulletin. So easy, so simple yet so powerful: a member creates an album and upload pictures to that album. Then people can comment on the pictures. That's all.
Why Gallery add-ons for forum softwares are so bloated these days? Go take a look at all the features offered by the add-ons mentioned on this thread... do you really think your members will be using even 25% of those features?
I would suggest @sonnb and @Chris D to release a "Lite" version of their add-ons with basic User Album functionality: comments and likes, nothing more! I believe that those Lite versions will sell more than their full counterparts and not because the price... in fact if you provide both versions at the same price I'll take the Lite one.
If you guys support my idea please like this post.
And on a side note, there was even a thread on the Suggestion forum asking for basic user album functionality and the moderator closed it and marked that one as "Duplicate" of another completely different suggestion of someone asking for a full Image and Media Gallery. I really hope the moderator could reconsider his decision.