Quoted:
Six of one, half dozen of the other for the most part.  I'd say most CL barrels are capable of fine accuracy, certainly minute of human out to 800 yards, but if you doubt that non-lined barrels are INHERENTLY more accurate, look at what the long range bench rest shooters shoot.  You don't seem CL barrels on guns designed from the ground up to shoot tiny little groups where .001 inch or 1x is the difference between win and also ran.  For 99.5% of the people it doesn't make a lick of difference if it is a good chrome-molly CL barrel or a CM non-lined barrel or SS barrel, but if you absolutely want the utmost in accuracy then a good stainless  or unlined CM barrel is the way to go IMO.  And forget about the longevity thing when it comes to CL.  If you care enough about your shooting to want the absolute smallest group possible you will never be shooting your barrel that hot anyway nor will you neglect it to the point that CL would have any benefit.
Serious use work gun, go CL.  Varmint, long range, or target rifle, go SS or CM unlined.