From what I am seeing, PoiZone and Harmless are more for electronic music.
Then Nexus is more for Dance
Harmor, never bothered to use it, I bet its a demo in fruity edition xD
Sytrus, too many presets, hard not to duplicate a preset sometime.
Then Sakura, it just wont stop crashing FL Studio (im running fl studio with a linux software called wine, not using windows nor mac )