Re: What's the tonal impact of smaller gauge strings?
You should pick the strings that give you the amount of push back and "rubberiness" that feels best to you. The tone can all be tweaked with various adjustments (pickup height, e.g.).
To me, light strings feel bad, on both hands. They are harder to control, because they don't "settle" well to my taste. Heavier strings feel far more stable and predictable to me; they are always right where I expect them to be, and I never miss a beat. On light strings, I stumble, sometimes even after I get used to them. Others who play differently will have different experiences with light and heavy strings.
Also remember that string height goes a long way. Light strings can be made hard to play if they are set high...and heavy strings can be made easy to play if they are set low.