What carrier for this phone?

So I am getting a new unlocked phone and was wondering what carrier I should go with based on the phones specs. I would love to be able to use 4g LTE but it's not a make or break for me.
Based on these cell freqs what carrier would match better for this phone?

Quote:

2G: GSM 900/1800/1900MHz 3G: WCDMA 850/900/1900/2100MHz 4G: FDD-LTE 1800/2100/2600MHz

Should I go Tmo or att, or does it matter. Thank you for reading...