Id go the La Spaziale. They are great machines. Im a tech-head, so the dual boiler machine really appeals. Ive seen a shot temperature profile from the Spaz and it was flat to less than 1 deg C! The thing of concern with the Rancilio commercial machines is that they are supposed to run hot. You can obviously compensate fro this, but do you want to?
Of course, beans/grind/tamp are all way more important than the machine. But once you have that sorted, then we start picking machine nits.
Just my $0.00 worth (rounding $0.02 to the nearest $0.05)