Your icon/avatar is Wakka the blitzball player from Final Fantasy X!!! I remember when that game came out! It was legendary I think all the rpg players I knew bought it. It was so great and perfect in my opinion, I love it! FF XII is great but needs better story and characters. People don't like FF X-2 as much. FF XI is good though but FF VII: DoG people have problems with.
Will FF XIII and/or FF V XIII match the power of FF X? I think the most popular FF's in the main line are 1, 4, 6, 7, 10, and maybe 12.
Final Fantasy VI!