Hey, Halfdeck,
Have you seen Awiz?
http://awizsoft.com/
This one has a lot of features and is not very expensive...
As for your special request regarding Vip and usual members...
There is a very functional script Adultwebware.com (a bit complecated)
Read this
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Features listing (674 kb)
http://www.adultwebware.com/doc/aw-features-list.pdf
Complete features description (7.9 mb)
http://www.adultwebware.com/doc/aw-features-all.pdf