I've been using <a href="http://ftp.mozilla.org/pub/mozilla.org/firefox/nightly/latest-trunk/">Firefox 3.6</a> lately.

It's reportedly <a href="http://news.cnet.com/think-firefox-3-is-fast-try-firefox-minefield/">10% faster than Chrome</a> and from my experience it's very fast indeed (and surprisingly stable for a pre-alpha... I've had not a single crash in the last couple of months).

I definitely get excited about new software 'cos I like to change everything about my computer every five minutes. I had to install new operating systems on my phone, router and mp3 player when they became available.