Also ASUS netbook + Ubuntu LTS, flawless for years, to this day. Now it's mostly elementaryOS (also based off Ubuntu LTS) on every desktop/notebook, works just as well and it feels even lighter.
I've been using every LTS release since the first ever, and I can't praise it enough. Keep up the good work!
I use Midori on Linux and IE on Windows because of the scrolling.
IIRC Firefox is doing decently with scrolling on OS X with Apple's trackpads, but it doesn't work as well with the same trackpad in elementaryOS (or with the touchscreen in Windows). Midori works perfectly.
From my experience, scrolling well is a bigger deal than how many threads it has for whether or not I like using a browser. I know there are stability advantages to the process separation, but I haven't had any trouble.
I've been using every LTS release since the first ever, and I can't praise it enough. Keep up the good work!