I used to play EQOA on Marr's fist. When I was lvl 8 I already started losing interest in the game, I never made it past 30 and eventually the population died down mainly to WoW and partially to FFXI. It was a fun game at first but it was too hard to get into. What the game lacked in effects it made up for in graphics, music and the ability to roam the world without loading each zone like FFXI. I quit playing because the game was so boring and there was nothing to do. I waited and waited and waited for the expansion but eventually got tired of paying for an account I wasn't even playing. I have to admit, EQOA had potentiall but due to the lack of gamers and eqoa staff members it kinda died after Frontiers came out.
As for Final Fantasy XI, I don't find it hard to get bored with it, because at one point everyone gets bored with MMORPG's, you'd just have to find the spark again. I find it as a major improvement over EQOA in terms of classes, skills, cities, music, effects etc. The fact that you can travell by airship is pretty cool too. I think the trick isn't really to look at it as a Final Fantas game, but more as another online rpg. But I must admit, it seems that SquarEnix took the hype from the Final Fantasy seriers to lure people in.
You guys prolly didn't get this from the messege, but I believe it's all based on a matter of opinion. My friend in real life played on marr's fist too, his name was SirMoth. He loved the game with a passion and would stay up for hours improving his character and helping out others. So yes, you may not like FFXI at all, but I believe this game is worth every penny I'm paying on it.
~Hope that wasn't too long or stupid ;)