It all depends on the difficulty level, surely?
After six years of playing Civ2 I thought, when I found this site last week, that it would have little to teach me. Playing game after game at King Level (and getting bored with the ease of victory) I was convinced that GL and GW formed the path to an easy win (200-300%), but I found this strategy rarely worked at Emperor where, barring very good fortune, I always tended to come unstuck. I usually found I had to convert so many citizens into entertainers that I couldn't build ANYTHING quickly enough.
So yesterday I tried HG first, following the reasoning of many contributors, and here I am in 1908 with all 6 Modern Wonders (no MP yet of course), 45 cities, the 5 civs left with just 20, and hopefully a score around 400% at the finish. It's opened up a whole new game to me. I'm looking forward to trying the Colossus/HG combination that so many contributors recommend.
King Paramos is dead! Long live Emperor Paramos!