Using 32-bit here.

One thing I notice: in 32-bit mode, if you get really jumpy mouse, you just shutdown the computer, and start the Mac right-away.

After booting Windows and then restart to go to Hack, it will have the strange mouse behavior. Shutdown ... leave for about 5 seconds ... then boot right-away INTO Hack, then you get smooth mouse again.

I find the 32-bit a bit more advantegeous, because I can have the Paragon NTFS reading/writing my NTFS partition at native speed. The only drawback, is that you must connect your second display monitor (if you use it) in order for it to be detected. It can be removed, but it will not be detected after removing.
But that, I think, not everybody needs that.

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