Xenogears. Definitely, Xenogears.

I would choose FFX over Xenogears on gameplay. I really like the CTB system and wish it had been used in more games. Characters though? FFX doesn't really have one of the better casts among FF games and Xenogears had some all time greats. Art direction? There are good and bad points for both. I'm kind of neutral on this. So this race is a bit closer than I thought when I started off. I still think the discrepancy in Xenogears' category is more than in FFX's though.