Jim, I guess it depends on what you define as "good". From what I understand Hunter's traffic has a very good prod, but it is also (relatively) pricey. It should come down to what value you are getting from the traffic.
We try to price our traffic so that it costs the (average) customer about $3 per 1000 out clicks on their site. That means our $1/K exit traffic has an average prod of about 35%, and our $4/K clicked traffic about 130%.
If you need more info, see
www.fpcclicks.com