Where I work at, we converted to 480 (3 ph) about 5 years ago. Before the 480 vac, we had 208 vac (3 ph). Keep your eyes on eBay for busways, buss plugs, transformers.
It may even be beneficial if you have a friendly electrician that you can pay (as a consultant) to help specify what you need.
Ex: Startup and future expectations of company growth. What amperage. What applications will need to be to local codes. Specific KVA transformers to drop down to 208 bussways and plugs. Making sure of proper series # for buss systems. Adding supressors for "clean" power. Yes, "there is a lot to ponder".
It may seem costly up front, but your electric will be much cheaper and it will pay itself off in no time. Also, think of the maintenance repairs that you will save on machine and your facility by having a cleaner power. Just my $.02. Good luck!!