Hi, I was wondering just how much noise noise-cancelling headphones can block out. I was thinking of buying a pair for when I'm mowing the lawn (which is much too large). Do you think a pair of these would block out most of the engine sound from a noisy riding mower? If so, are there any models that you could recommend for under $100? Thanks in advance. P.S. Sorry if this is in the wrong forum. I didn't know where to put it.