I own 2 pairs of PX200s - one pair for leisure and travel, the other pair to
use with my camera kit. They're terrific IMO - efficient, comfortable and
portable. In comparison, I found my previous Sony Streetstyleeee 'phones
uncomfortable (they press uncomfortably on the ears are aren't practical if
you wear glasses). As for in-ear designs, the Sony MDR-EX71s are the best
value I've heard in the UK market (and the least uncomfortable I've worn)
but still aren't a patch on the PX200s. Certainly the Sennheisers - whether
through efficiency, better frequency response, closed-backness or a
combination of the three - give the sound I percieve to be the loudest.

Thanks for the reply.
Just one question, are they small enough to put inside jacket pocket?
I know I should just go and see one in a shop, but work hours are not
letting me at the moment.