two wines, two stories

So, I initially cracked a 2006 chateau roustang bordeaux. Way too bitter so let it sit overnite lightly corked.....very good the next day, until i hit the 2nd glass.... back to the bitterness. Might try to vinturi this one. 2nd wine a 2007 five rivers cab sauv. First nite was very good, but 2nd nite was bitter. Age was not this one's friend.Of the two, I guess I would give the bordeaux a 2nd chance.