I am an beginner, with a hand-me-down guitar. I restringed the guitar with Elixir Optiwebs, one string broke because of a dumb mistake.
Since I didn't knew the difference from coated and uncoated strings, I bought the Danddario single string.
Long story short, I now have a rusty string with 5 coated ones. At the beginning though they sounded amazing and if you don't have coated strings this will be good for you.
Please don't make the same mistake as me...