It might seem werid, but I'm often forgiving of older shows - such as Fate Stay Night by Studio Deen. Whilst it doesn't hold a candle to Fate Zero, UBW or HF by Ufotable got a show made in 2006 it still very well made.
Obviously if somthing was trash in its time, it can still be trash today. Such as Mars of Destruction or Cipher. Those are god awful. And not just cause there old.