if i were you i would spend a couple of hundred pounds more and get a good headset as when your flying like me nearly 200 hours in just over a year it makes a hell of a difference. even if u dont intend to fly much they will last longer in the long run anyway.
i would suggest the David Clark range.
the cheaper headsets may not fit as well, the band on the top may stop blood flow around your head and just become a pain to wear for any more than an hour at a time. also the more expencive ones are better at keeping noise out and the cheaper ones may not have noise cancelling at all.