As long as it does not require an extra click like marking forums as read. I like to mark them as read when I am done and that silly window that says... Are you sure you would like to mark the forums are read. I would not click it if I was not sure.
I currently manage two forums, both on Invision Community. I can agree that in some aspects Xenfor looks better and it seems to slowly become the standard forum software used by big communities. However, I'm still happy with my Invision Community.
Speaking if forums are dead or not my answer is that depends on the niche. I couldn't make profitable an SEO forum (as most of the people moved to FB/Linkedin Groups) or are reluctant to post content on public forums but I have good success with financial forums.
Auto forums are also on a descendent path.
Other niches that work well are the niches where people don't want to post information with their own name or they need to offer detailed info which is not time-sensitive. (addictions, adult, money-making opportunities)
Here are two articles I've written regarding starting, managing, and monetizing forums.