OK IP.Board all the way, IPB is 1000000% more professional and better value for money (Before 2.2 came out, there new licensing sucks ).

Alot of vB's features are cheap versions of IPB's ones. If vBulletin do add the profile page, it wont be neater fashion, just take a look at vB's default skin, its crap!

As for the ACP, vB is way behind, I mean who uses split screens anymore, IPB's acp is hot, for those that havent seen it, get a online demo. Its sexy

I have used IPB for 3 years since 1.3, and it has got better everytime. I have made about 40 mods for IPB (AH Modding on Invisonize, IPSBeyond etc.), and I know the coding inside out, its tidy, effective, nice syntaxes.

Anyone that does own vB, i do not know the code, but does it have easy stuff and variables such as
Code:
$this->ipsclass->member['id']
$this->ipsclass->DB->do_update
$this->ipsclass->adskin->page_title = "Hello";
Etc., they have made it very easy for the coding side
Anyway, vB is behind, face it. Also IPB release QUALITY releases, about one a year for major ones, bug fixes when they roll in. vB seems to make a release every day >.>