B2B or B2C which would you prefer?

I had a friend ask me the other day what type of telemarketing would you prefer to do. I had to think about this and out of the two came to the conclusion that making outbound telephone marketing calls business to business was the preferred option. This does however depend on the products or services you are promoting. If you are appointment setting and are promoting a business that provides a service that will cut costs for another company it should be relatively easy. However if you are calling B2C and trying to get money from the customer the task is exponentially harder. Opinions please B2B or B2C?