So you think the 58X is a little more pleasing? I thought it was the livelier one. Anyway the 58X has the best bass extension, a little more pleasing FR compared to 650 and it's portable, don't you think that's worth to lose some detail as a trade? You gain some good benefits, I thought you were a little to hard on them, unless this detail loss is very significant, but if detail loss was ever mentioned most reviews said the difference is small compared to the 600 and 650. For me the 58X was boomy lacking some bass control and grainy but with time as pads got older both issues went away, I also started using Oratory EQ and put some felt in the driver. Not saying something like wooow it has much more detail and is superior now but all of this helped to fix many of the 58X flaws.