I'm really enjoying Pikmin 3, I just never seem to have the time to play it. I'll have to plan ahead of time and say "Today I am going to play Pikmin 3" and then I'll play it.
I'm heavily biased about Xenoblade though. I'm probably not the best person to answer that question. It is an expensive game though, so if you can find it at an affordable price, pick it up even if you have no intention of playing it. I have had to do a bit of grinding for one of the bosses early on though, and I did spend a lot of my time messing around doing side quests, so your experience may vary.