100% agree that the Beocom 5 is a superb product. It's one of the best B&O purchases I've made for a while. I bought two phones, plus speakerphones, for the office.
The quality of the speakerphone is so good, I regularly pick up the phone and ask the caller if it's any clearer. They say "no, no difference". This makes having a conversation (through the speaker) a realistic prospect. People do not know they have been put on speaker.
Potential B&O customers: buy a Beocom 5. Although expensive, for business use they are well worth the purchase. Recommended.