I've also had a few others that had a metallic taste and no nose to it.
You're not drinking directly from the can, are you? Have to admit that I'm not a real can fan either but drinking that way'll guarantee a metallic taste.
Just out of curiosity, why don't you like your beer in a can? I can say i drank it both from glass and can and can't say it was better either way. From a consumer standpoint: why put it in a can if you have to bring a glass with you to enjoy it? IMHO even Guinness in a can has a metallic taste that it doesn't have from Draught or bottle. Maybe I'm just too much of a beer snob, but I think cans cheapen the beer and ruin the taste. I guess if I was to have a BMC beer, I at least know its gonna taste like ass and I know what I'm getting into. Craft brewers work so hard to bring flavor and personality to beer, why F it up with a can? I know the answer will be cost, but........