1)Ketsui X-Mode (you could put this in a Japanese arcade for 100 yen a pop and there'd always be a line)
2)Espgaluda 2 Arrange (YGW power)
3)Mushihimesama Arrange (would be near perfect if it didn't have an autobomb or the hideous blur filter)
4)DDPDOJ X-Mode (some glitches and balance issues and the ugly green hyper laser lessen the awesomeness of this, but it's still lots of fun. Needs a ver 1.5)
5)Everything else (who cares)
Cave arrange modes are generally quite blah, and some are complete crap (I'm looking at you, Futari). 5pb knows how to make really good ones, for some strange reason. Lots of people love Espgaluda's Arrange, but try as I may I've never liked it.