I have one beocom 6000 and am very happy with it! 
Definitely worth it but if you don't want to spend too much you can have a look on ebay. There are always plenty of them for sale.
It's a very easy phone to use and the sound quality is very good. Not to mention the design...
 I also use it to control the volume of my Ouverture and MX7000 tv. A real joy  
 
Bruno