Haha, your feelings again mactec. The UC400ETH is a whole better than the Smoothstepper, it works with 3 softwares (Mach3, Mach4, UCCNC) and works flawless.
So he can upgrade any time to mach4 when he wants with the UC400 or even better if he upgrade to UCCNC as it is superior to Mach XY.
It is funny that for you everything is better than what I say, just because I'm saying it.