Rishy,
I'll summarise in one phrase :
Hearing loss is not recoverable
Unless you want to be on hearing aids earlier than necessary, if you can afford to spend money on a good headset, then you should do so.
My first recommendation would be to make sure you buy an ANR headset rather passive. After that, choice of brand is largely down to preference and budget, but DC and Seinheisser (spelling ?) are the two most common.
Also of note, if you wear glasses (or intend to wear your favourite pair of sunglasses when summer eventually appears), try to get the opportunity to test the fit. There's nothing worse than frames being uncomfortably your temples during long XC outings.
By the way, unless Bose units work differently to others I've used, this ...
There is absolutely no excuse for running out of battery whilst airborne!
Is a load of rubbish. (to put it politely).
Good ANR headsets become passive headsets when the batteries run out ... they don't suddenly cease to be and become ex-headsets .....