we all have a paid software that we all like. what is yours and what is your reason for liking this software. For me if it's not already obvious. I like Invision Board. Reason being is it comes with a lot of features. xenForo comes in close second but I don't use it as much as ICv5 due to lack of development from the xenForo team.

Invision has always met the needs of my projects and, therefore, has always been my favorite. Plus, I started my forum journey on IB.Free, so it holds a special place for me. However, for purely forum use, I do find XenForo to be slightly better. IC5 has a really nice forum and wins in modern tools, but many times I feel like forums don't need those modern tools, and XenForo just brings the best of the old school forum setup. Meanwhile, IC5 often seems to fight itself with being a forum.