The pro is a bit pricey but cheaper than when the Mega Everdrive Pro came out. Also, sucks I have to mod my Duo to get it to work. Mod doesn't seem that bad though. The core version seems pretty nice. I still have a V1 Everdrive lol! The Core version would be nice with the Arcade Card support and Ten no Koe saves support. My original Kisado converter has issues with large HuCards like my Arcade Card Duo, SF CE. The pins aren't tight so I have to slide some thick paper underneath the HuCards to make contact or I get graphic glitches.