About pots, linear and audio:
About wiring and electronics - a compilation of information?
Yes, it's really better to use audio for volume, no question about it, as it's the way our ears works.
However, I don't think there's a concensus on tone. Some prefers linear, some prefers audio. I think it really depends of your ears and of your guitar.
But if you find that your tone control is acting more like an on/off switch than a full-value control, it may be that you would benefit by changing the type of your tone pot: if you have a linear (B), change it for an audio (A), and if you have an audio (A), change it for a linear (B)
Hope this helps