3 phase, and higher voltage is always better for your supply.
It has to be transformed anyway for your lights and receptacles, (unless you use 277V fixtures)
Your electric motors are much smaller and better for the same horsepower as well, no capacitors to start them.
whoever rents the space next to you would use the high voltage if equipment is used, or can run off of a 20-30KVA transformer which are everywhere and not that expensive.
That talk of european machines not being allowed is ridiculous. They are perfectly fine to be used once you obtain your UL listing on them or a standards association stamp which are not that expensive and easy to get.
Only thing to watch is your frequency on them. lots of them run on 50 hertz so your motors would spin faster running at 60 hertz. Some can take it, some cant.
Another factor is your conductor sizes will be smaller which saves you quite a bit if you have any amount of higher current machines.
This is what i do for a living, so i have some experience