Theme recommendations: membership, bbPress and selling

Just wondering if any community members have a recommendation for a theme I could use as the basis of a new site I am planning.

It will be a membership site (where membership is free). Some content will be available to all visitors while other content, as well as a bbPress forum, will only be available to members.

As well as this, to help fund the community and content, I will be selling services through the site (although no need for e-commerce at this stage).

Any recommendations for a theme that could do all this really well?