Well, then it's just a matter of preference.
I personally don't care about bit rates and A/D D/A business that much.
If it sounds good - Rock on!
If I can make it better -Great!

I personally use Pro Tools hardware with both of my MACs.Digi 001 with my G4 and an 888 with my 7100.
I can tell that 24 bit converters on the Digi 001 are definitely warmer sounding then the 16 bit converters on my 888, but in overall I think they are both great.
So, if I recored something at 16 bit and it sounds great, but not as warm as 24 bit, I don't lose any sleep over it.
The difference is minor. Too minor to worry about.

But I do know people who claim to notice a BIG difference in the sound. May be their hearing is sharper then mine. After all, we're all different.

-ED-