Well, many Cave fans I know share your opinion about Mushihime-sama, but others prefer Mushihime over Galuda because it's less technical and more focussed on pure shmup action, despite its colorful look and the huge and detailed insect sprites.
Personally I love both, but I really dislike Galuda's end boss... there you are with your powered-up charge shot, bombs and whatnot but you're not allowed to use all that crap because it gives the boss energy instead of taking it away... wtf?!
Anyway... Count me in for Galuda2!