Because of CAD system requirements I am committed to using W7 64 bit.

I am reading about different ways to get Mach3 to play nice with Windows7 and am wondering what is the best setup for the cost....OR am I better to purchase Mach4 and buy a USB breakout board? I am ready to purchase Mach 3 or 4 software and want to only do this once.

I have a HuanYang 2.2kw vdf spindle and would like to control speed from Mach and 4 Longs stepper axis drives.

Any thoughts?