I'm also a owner of Beomaster 8000 and 6500. In fact I got 2 of each 4 in total.
When the BM8000 is working it sounds wonderfull but the drawbacks are the space it takes. I also have CDX which actually came with the rosewood BM8000 and I do like how it sounds and work owerall combined.
Now its not all coolness and ready for listning but rather finding a repair man that can handle early '80s B&O which is time consuming and not alot of people knows how to do basic electronic skills right. Mostly its more based on can we just replace the whole part instead going trough capistors and soldering to find the faults. For a CDX/CD50 they will say the lazer is gone when in fact its not.
It's getting harder to find a BM8000 without faults that is mostly due to age or non qualified electronic service.
I think I have had my fair share of faulty B&O but its always a joy when its been serviced correctly.