there is no rakeback on party either. not sure if u were just making that up as an example or if u actually saw an offer for party rb.
i think u generally can't be with 2 different affiliates, so yeah if u plan to be with a site longterm then id go with rakeback.
see the affiliate/rakeback forum for more info
http://forumserver.twoplustwo.com/51...ates-rakeback/