For vsti midi things I recommend anything that looks like Quantum Leap or Native Instruments. They have the most awesome samples and it all works really nice.
I also use garritan personal orchestra plugin for the orchestral stuff.
And the free and tiny MDA JX-10 analog synth
Ezdrummer is my bestest friend
have a look (and surely a listen) here if you want to know more about Kompakt samples (from Quantum Leap)
http://www.eastwestsamples.com/
cheers!