Go for the best you can afford - hearing loss is irreversible. As a side effect, it may well make your learning easier, as the difference in clarity of ATC comms between, say, a BOSE or some clapped out old flying-school headset is staggering.
That's exactly why I had to as I heard
-all from ATC, or when the mike/s let all the noise in on top of 'ambient' noise.
High noise levels also influence my feeling good, so irritation causes decrease of concentration etc. Not very good.
I remember taking a flight with a friend who wore Bose-X and the two were hopeless together so he switched to my spare DC
So with the Bose X prices in the UK, I'd probably go for higher end DC headset.
There's one R22 where I'm now with bit crap intercom I once cancelled flight with (bumped to it due to CFI training) because it works 'better' with TWO DC headsets. Not two Bose or mix. Instructor's switching hot mike and the noisy ATC/intercom so we can work out ATC, what they're saying in two Bose X is just plain annoying. After my 2nd or 3rd flight in it that was it for maneuvres..