The writing is on the wall, and has been for some time, not least since it vBulletin 4 was declared end of life. I need to find a way going forward with my TalkClassical forum. The site is still very much alive and currently has 1.3 million posts, but I don't see any way to move forward with it on vB4 - the primitive mobile solution hinders that, as well as the lack of future development. Anyhow, as I see it there are four realistic options: Upgrading to vBulletin 5.4, or migrating to either XenForo 2, IPS, or WoltLab. Aside from the basics (forum threads/posts, users, etc.), I need to be able to migrate the following add-ons: I'd like to keep the current DBSEO urls, or at the very least redirect all of them so I don't lose inbound links/traffic. My users are actively using the blog system, so I need a decent blog system on the new software as well - and a way to import the current blogs. I'm using the DragonByte Advanced Thanks/Like mod (but in a very simple way, with just "Likes"). I need to keep all those likes as well. I'm ready to pay for custom work within reason, but of course the less custom work necessary the better. I'm not really sure about the future for vB5.x , although that of course would be the easiest option, with the blog already built-in. DragonByte also have a version of Thanks/Like for it, and I would assume that the likes can be imported into it. But vB feels like a dead-end, though I could of course be wrong. Also, I'm worried that it is quite slow, which is a major concern for a site this size. If not vB then it must be XF, IPB, or WoltLab. I really don't have much experience with these boards except as a user (and what I read here). They all seem decent, but what would you suggest, given the needs listed above? Any help/suggestions is very much appreciated, thanks.