Wow, not a lot of info there like type of screen (TV or computer monitor, computer monitor always best unless it's a second screen just for media consumption).
It will also depend on what resolution screen, if it's a 4K then you are best off using the thunderbolt port with a mini DP 1.2 cable to display port. If it's anything else then why not just use an HDMI cable it will make little difference.
I'm interested in a computer monitor so I can use two screens at once. Probably a 17 or 19 inch monitor with good resolution, doesn't have to be great. Will any monitor with Thunderbolt or USB work or do some work better with the MBP? My MBP is two months old. Thanks.
They should all work just fine, at that size 1080p is great so I'd just go with that, get one with an HDMI input and just use a HDMI cable.
You can of course use mini display port cables to connect using the thunderbolt ports if you'd rather but there is no need.
I would avoid USB if you can it's not the best way to connect a screen by any means.