Recently received a Parallel sample from the lovely folks at EZ-Flash, and it is sturdy, pretty AF (for a flash cart) and every game I tried. works great.
I ran into an issue though, I cant get existing .sav files I copied with my games to load...
Been waiting a while on this one:
https://sketchfab.com/3d-models/gun-del-sol-infinite-dfec2fa4fd774404903b3f6d7064480d
Even Hideo Kojima reposted my tweet about it :P