help me decide (cms + vb)

[tinatoth]

im thinking of purchasing vbulletin but my decision depends on how well i can integrate it with some cms system.

my host offeres these as preinstalled:

Drupal
Geeklog
Mambo Open Source
PHP-Nuke
phpWCMS
phpWebSite
Post-Nuke
Siteframe
Xoops

can you tell me which one of them best integrates with vb? ,

do you have any other suggestions? i dont mind installing something manually, as long as it's free, because i like to try everything out first, on MY server.

I know phpNUke and PostNuke go with vb, but im not sure how much I like them.
I like phpWebsite a lot, but I dont think that one integrates with VB.
ive checked out vbportal demo if im not wrong, and i cant say i liked it, it lacked some options i needed.

id like to try out the cms systems that integrate easily, and if i like them ill buy vb.

(and by integrate, i mean mainly that they use the same member database as the forum. i dont really need to have a lot of forum content on the front page, the site in question is more like an e-zine.)

thanks!