Yeah I wish I had found XF before I purchased vB5 (but used 4) because I threw away a lot of $$. But I went with what was considered the very "best" forum platform that I was familiar with, 10 years ago. Had no idea about XF.
I also have several wordpress sites, localhost VB sites.. stay on top of as much as humanly possible. XF developers used to work at VB .. that is why VB sucks now... LOL