Let’s do the math shall we? $6,000.00 divided by $0.01= 600,000 seconds = 10,000 minutes = 166.66 hours = 0.99 weeks. Listen to those BRAND NEW @Chief bonehead MONSTERS for only 1 hour per night and the cornwall 4’s will be “paid” for in 24 weeks ish! Any further enjoyment is a bonus and the cost per minute will continue to reduce. I really like the heritage lines and LOVE the cinema/pro line I cant say the same about the reference line.
Those Belle’s of yours have some very fine components in them, will they beat a new cornwall only you can decide that based on your ears in your room with your gear but my money is on the C4.