I love Mushi Futari, Death Smiles, and Ketsui pretty equally. Though at this point I have more issues with Futari than DS and Ketsui, but I've played Futari waaaay more so maybe that will change over time. Espgaluda 2 is definitely my least favorite Cave 360 game right now, but I still haven't bothered to properly learn the scoring system. It's so needlessly complex.
The latter half of stage 4 is where Ketsui really starts to ramp up for me. I usually wind up dying once or twice on stage 3 because I try to kill the giant boat without bombing in order to get the extra life, but I can't dodge it consistently yet.
Anyway, I 1240'd Magna Carta 2. Pretty meh game. It's basically a single player MMO. I was liking it at first, but it never really evolves. It's just the same exact gameplay from start to finish more or less. The story is generic and predictable, the music is mostly forgettable, the graphics are meh, the combat is kinda fun but super repetitive. In the final quarter of the game, I was just wishing it would end already. It's not the worst RPG ever though, I'd just rank it well below stuff like Enchanted Arms and Operation Darkness (which I enjoyed quite a bit).