We bought ours two years ago together with a beolab 9 pair to pilot all the link rooms in our house.
I'm not as positive as other here, I'm sorry. The sound quality of the speakers is extremely well, but the usability of the beosound 5 is below par. I admit it looks good, but at +-5000 euro for a pc running xp you would expect it to be easy/great to use.
The scroll wheel for instance has no use when you want to search for a particular song. Imagine having some classical piece called 'Op. 4 movement IV - Allegro <well known name>. Of course you only know it by the name. In itunes or similar you would just type the first few letters of this name and find it. Not here. I actually have to go into itunes on my phone or mac search, find the complete name, go back to the BS5 and find it by turning the weel endlessly. This could be easily fixed with an app of some sort which lets you build a queue or something (like the sonos app).
MOTS is a joke, it has a strong preference for some songs (no matter which song you start with) and after a while you just know what song is coming.
I tried to alleviate some of the pain buying a Beo6 hoping i could find music with that faster. I know have a very nice looking, useless, slow remote on my cupboard for the price of an iPhone.
Spotify integration is good, at least this lets you create playlists and so easy in the iphone app or on your pc and play them on the bs 5, but again there is no integration with beo6.
Growing up, I always dreamed of having a B&O system, now I regret it, I feel 'tricked'. I hoped they would bring the system to the next level through updates, but they have failed so far.