220v is a must, unless there is some weird limitation like 220v isn't available in your country or something odd like that. The guy I bought my compressor from had just upgraded his shop to 3-phase power
Calculate the biggest compressor you think you'd
ever need, based on what you think you'll be using it for, then go two models larger.
Another way to do it is to find the biggest, baddest compressor you can afford, then get the next up.
No guy has ever said "I wish I'd bought a smaller compressor"