Ok, now the Boss is sitting in my rack. After cleaning the unit inside out it looks nice in the rack and sounds superb! Listen to this demo:
http://www.quandace.com/F5D_A6_BossCE300.mp3
I play my favourite song, Terminator theme in the demo and turn the chorus on at 1:10. Before that I only tweak the A6's filter cutoff. The CE300 sounds smooth and very analog. I paid 120 euros for it, maybe too much if you check what others have paid but here in Finland we don't see these for sale very often (if ever) so we also have to pay a little more. Anyway, I'm very satisfied by the sound and it's well worth the 120 euros.
