Most Helpful Guy
Don't try to make yourself special because you watched an anime.
Firstly, this anime is ranked as #1 in popularity, so you can imagine that you neither are the first nor the last person to watch it. It's a classic. Moreover, you may be interested in knowing that 2006 is everyting but old when it comes to anime. Many of the most famous ones started in the 90's and some of them are still being released on a weekly basis.
I don't mean to be rude, it's great that you liked this anime, but you calling it "old" and trying to look special triggered, honestly, me a little.
As for your question the anime is obviously the best. I haven't read the manga, but probably than many would agree on that for the best one.