Both are wonderful products each having very desirable attributes. I think the Classe is warmer sounding but its hard to walk away from the best warranty in the business by Bryston (helps keep the value over time). Unfortunately, price dictated my expenditures so I went with the 4B-ST but I am very satisfied and feel no loss in not being able to afford the Classe. If price is no object there are other good choices in the marketplace at similar price points...
