I guess Sylenth1 is the one I use the most, mainly for chords, because it sounds great and is easy on cpu. Harmor is also great.
FM8 an Sytrus for fm stuff - dirty basses.
Diva for experimenting with cool basses, it eats cpu so I use it monophonically.
Serum > Massive for wavetable synthesis, but actually I don`t use them that often because I don`t incorporate growls and stuff into my music.
I started getting into Spire recently to complement Sylenth1 chords, it sounds really lush but it`s hard on cpu so I have to limit unison voices in it.
Absynth for some magical pads.
Outside synthesis I love mda ePiano and Lounge Lizard EP-4 for rhodes and Chromaphone for cool sounds/attacks of mallets, bells etc.
Cheers!