I've had 5-6 bottles of this over time (2003-2008). There was quite some bottle-variation. The two best bottles was very nice wines. A couple showed too much oxydation. The last bottle I had in may 2008 was definitely on the way down.
Rubesco Monticchio definitively ages far better. Also the normal Rubescos of the 60's can still be shockingly great wines. Here's a note of the 67 I had in September:
Torgiano Rubesco 1967, Lungarotti
Deep brown-red colour. Red core, browning rim. Very complex and pretty nose. Lightly spicey with sangiovese-notes of cherries, anise and hints of old wood and dust. Fullbodied in the mouth. Loads of fruit left. Nowhere near fading. Aged fruit, very complex. Hints of old woods, cherries. Clearly old-fashioned in style. Medium to good acidity. Some tannins in the back. Good length. On top now, but will last. Great wine. Has kept very well.