So I'm playing Gen5 right now, re-going through each of them after completing Y, and I'm only using mons I've never used and I can't decide who to use for my grass dude. It's either going to be Maracatus or Amoongus. So what are the pros and cons of each? Any good/bad memories with either? Your recommendation?

tl;dr Maracatus or Amoongus?