Choosing between the two, i would go for Konan because i can't afford to ger Edo Hiruzen xD .. hahahaha

Jokes aside, Konan is much better in my opinion and much versatile than Edo Hiruzen .. Both Outside and Inside the arena .. Considering the price, Edo Hiruzen is way too pricey as of this moment since yeah, i can understand the fact that it is his first appearance in this game so we can really expect him being on a platinum price value (and that's because of the demand of players for months) ..