We get issued personal headsets, however those are very uncomfortable Sennheier ones. Not to mention they are very fragile, normally they dont hold even one year of shorthaul operations before they break down and it is a downright nuisance to try to get a new one out of our technical ground staff. Bought me a private one (telex 850anr), works like a dream, no problems at all, much more comfortable and no technical problems so far. Since Boeing is obviously unable to build a working intercom (at least for the cheap 737s) intercom is of no concern at all.