Depends how you're getting them. Zero Mission is expensive as shit on an original cart (relative to other GBA games), especially if you look for CIB. Once Zero Mission hits the NA eshop it'll be a toss-up. They're both great games so it's all what you're looking for that determines which is better. Fusion is a better starting point though, it eases you into the series' mechanics better.
You should check out my YouTube channel, The Golden Bolt! I review all types of video games, both classic and modern, and I also give short flyover reviews of the free games each month on PlayStation Plus to tell you if they're worth downloading. After all, the games may be free, but your time is valuable!







