I don't understand why some people get down on graves. Personally I'd take Chacon (and I did, in fact off the free agent wire!! Whoo-hoo!) but Graves is a CLOSE second. I'm not real worried about pitching at Coors, Chacon did very well last year at Coors, and he's not a flyball pitcher (if memory serves--I could be wrong).
And Lo Duca is pretty over-rated, but not bad. Victor Martinez will have a good year, methinks.