I wish there were a better selection at the higher seer ratings. Only finding a handful of options.If you're going split phase then yes, go for the 220v units. I haven't found a 120v unit over about 22 SEER rating. 3Kw on each leg gives you a lot of power to play with and makes it easier to load balance your draw since you'll be able to drop that right to a bog standard service panel.