So I'm recently finding myself with an unquenchable thirst for shmups.  Despite this, I'm fairly new to the genre and I'm looking for any feedback on some good ones I might be able to get my hands on.
 
I'll briefly list the ones I have at the moment:
 
Raiden Fighters Aces
Raiden IV
Ikaruga
War-Tech: Senko no Ronde (I know, I know.  It's weird and somewhat terrible, but MAN are those 'chievos easy to get!)
 
I have a 360 currently, and I'm not morally opposed to using emulators for anything older.  I also hear there are some good indie shmups built for PC, which I'm intrigued by.  So what do you guys think? I need my Bullet Hell fix!