that is mostly a preferences comparison. In terms of numbers vinyl is about 10bits. See http://wiki.audacityteam.org/wiki/Bit_Depth#sources. Some HA threads put it at 12 bits. That's not 100% clear math but I would say it's good enough. Also 1bit depth ~= 6.02db SNR ... or dynamic range which is approx the same thing. How much is audible above 12bit depth depends on lots of factors: ears, gear, recording quality, environment. E.g. you'll prolly never hear any improvement above 12bit in a car. Anyway, I wont care much about those bits. If it sounds good to you, enjoy and nevermind the numbers.