The old software has huge limitations especially once the site gets big(ger).
vBulletin is a much better forum software which is why 95% of successful boards end up running it. Plus we finally have a search function.
Unfortunately after the first members signed up to the SMF software the change was never going to be easy, and the longer we procrastinated on the switch the harder it would have been.
We did it somewhat sudden but all things said and done it wasn’t that bad of a switch.