For all my orchestral type voices and arrangements, my best source is my Tyros 5 and the fabulous Ensemble feature. Great all-in-one unit for home studio and for the road.

My best sound module I still use in my home studio is the Yamaha MU100R. This 1990s tone generator and add on expansion cards is still popular for users including the DX (DX7 synth), AN (AN1x synth) to the existing VL (wind and string virtual modeling) instrument and VH (vocal harmony) boards and I currently installed the DR (drums) and AP (acoustic piano) cards.

I still run multitrack audio tracks via the A/D inputs and all with FX etc. With simple System Exclusive data commands, you can have a MIDI automation track runnning alongside your other instrument tracks in a song.

I love the onboard licensed Aurel Exciter and some fully parametric EQ, reverb etc, to use with some of my vocal tracks. The incredible virtual modeling of the VL board is still relevant today, and when this is incorporated into the Performance multi-channel presets with the onboard samples you can achieve some breathtaking evolving sounds. Unique orchestral effects can be made by running the four separate midi channels from the Tyros 5 Ensemble output and assigning any combinations of the MU100R 32 midi channels and voice selections.

Marcus