Re: phpBB or Vbulletin?
I had a running arguement about this. IMO phpBB2 is as secure as vBulletin, but it depends on how much you want to add hacks and 3rd party mods. personally i don't mind doing that. Then there is the support issue. If you want to yell at someone when it doesn't work go with vBulletin. Nobody to yell at with an open source product.
For me, I don't want to pay for anything I can get for free. And I have a decent sized budget. We are switching to a Content Management System called phpWebsite. We bought 4 servers and paid around $12,000 for them. The CMS's started at $50,000.
phpWebsite is free. We've hacked it quite a bit, almost to the point that it is nearly not the same product we started with.
So really it depends on how much you like to work with it. If that is not a lot, go with vBulletin.
"don't end up with a grandson with a dog collar."