Earphones / Headphones: Where to try, what to buy?

bose do noise cancelling
but again pricey

this is one of those conundrums like buying bike parts

you have three choices

price
weight
strength

you can usually have 2/3 but if you want 3/3 it's $£$£$£$£$£$£$£$£$£
then it gets stolen [still sore/]