Yes Larry that was a typo as I should have typed B4II.

Larry we are using different work flows and sound sources with BiaB and I also respect your way of using BiaB. I will attempt to explain mine.

I consider GM sound sources (both soft or hard synths), soundfonts (SF2s), free VSTi's and purchased 32 bit or DXi softsynths as inexpensive ones. These include but not limited to Dim Pro, ST2 and all of it's add ons, and TTS-1. I will say that each of these have some good sounds but are not close to being a total package of good sounds. Plus I will add that I do use some of these sounds myself and in fact the TTS-1 is my normal template for MIDI in Sonar, however I replace virtually all of those patches with better ones.

Using external synths drastically cuts down on the cpu and ram, thus 32 bit is fine when using them. I wish that I could afford the external synths that I want!

The problem one will run into when using 32 bit BiaB/RB is when one uses something like Kontakt loaded with memory intensive patches. These patches would be velocity sensitive and loaded with various articulations. For example take Kontakt and load it with the morph choir and the Diamond Orchestra (using different patches for violins, cellos etc). Add Aria for an acoustic bass and SSD4 for drums and for the lead back to Kontakt for the Passion Flute. Now you will have memory problems and will need 64 bit. Note this is a typical workflow for my computer music.

This is not to say that you NEED these to make good music. You can make great music with just soundfonts or free VSTis. It is NOT the sound source it is the MUSICIAN that makes great music.

Whenever I get something stuck in the back of my throat, I dislodge it by drinking a beer.
It's called the Heineken Maneuver.

64 bit Win 10 Pro, the latest BiaB/RB, Roland Octa-Capture audio interface, a ton of software/hardware