My favs are:
1* Auto: Arcadium (DHaner)
2* Easy: Neferu (iIBonIi)
3* Normal: Visual (HanStor)
4* Hard: MidNight (Sweetdude)
5* Hard: Between Worlds (xXLocoXx)
6* Harder: PlayRoom (AbstractDark)
7* Harder: Dark Drop (Alkali)
8* Insane: SuperSunix (MrSpaghetti)
9* Insane: Exploding System (Oleeeeg)
10* Easy Demon: Coolio Levelio (Alkali)
10* Medium Demon: Old Rust Dont Dry (2003Devin)
10* Hard Demon: Project Mandelbrot (Furorem)
10* Insane Demon: Stalemate (Nox)
10* Extreme Demon: Broken Signal (Grax)