MX4002 is better

No

Main diff is age and the fact that you can remote control an Avant/DVD/VCR in the main room if the MX4002 is connected with the Avant through RF- out on the Avant. You can still listen to music in the MX4000 if it is connected to a MCL2AV

Mico: 2) MX4000 does not support your case, it needs to be a MX4002 - if you are satisfied with the MX design and tube size of 4002. From the CRT range my favourite is also the LX series both design- and audiowise. If you add an MCL2P that would add more flexibility and power to the system. I have had this kind of setup and would recommend the MCL2P

1) no - local souce = local use only 2) yes 3) MX4000 4) correct if connected to the MCL2AV 5) correct 6) The beovision has to be connected to the MCL2AV box, but again It's a local source so you I doubt you can listen to the TV in other rooms unless it is connected direcly to the BM

Christian is actually right - there is no problem if there is only 1 DECT phone inwolved. If I pick up the call with my beocom 2500 I can join the call on my beocom6000 by just pressing the "phone" button. My handset are mark I - with the DOT button

The problem is that I don't wan't to push to call to another handset. If I answer the phone in my office with my Beocom 2500 I want to be able to listen/join the call on a Beocom 6000

Is it posible to use 2 handset at the same time - to talk to the same person ? I have the PSTN base - not the ISDN