Hello there and good day. I have to teach two classes of middle-school Music this year and will be teaching some basic guitar. We have 30 decent Yamaha acoustic guitars that I'm sending out to be restrung. I'm wondering if it would be worth it to spend extra on Elixir's. I personally don't like playing with them, they just feel too soft and weird under the fingers. But for a class set, I'm wondering if I would be able to get a full school year's usage out of them. Some kid hands can be 'gooey' and I'd like to be able to wipe them clean after use. Thoughts?