Dunn is probably the ugliest source of HRs. That being said, he will get you 40-45 HRs. It all depends how badly you need HRs,
because he will also bring down your BA(he'll be lucky to hit .260, more likely .250). I personally try to avoid him. I'd look to another source of HRs if you need them. just my opinion though.
"Win if you can, lose if you must, but always cheat."--Classy Freddie Blassie