Does anyone agree there is a big difference in the quality of an optical cable? The prices seem to vary from £4 upwards for 1m. Will I get much better sound from a cable costing £25, or is this an area where the laws of diminshing returns reign king? I know there have been similar questions for HDMI cables and arguments that there will be no loss of digital signal at such short distances - but Has anyone upgraded or conducted a test which confirms "you get what you pay for" Apologies if this has been discussed elsewhere. I have searched but to no avail. Thanks everyone.