I test a lot of browsers. Before Firefox 3 came out, my favourite was Avant Browser. (It builds on the IE kernel, but makes it much better). It took 10 minutes to be convinced by Chrome. Tab management is great (and a bit more stable for some AJAX type sites). In my preliminary tests, it was faster that Firefox 3 on both my desktop and my laptop. Browser settings has been kept to the bare minimum, and that is quite refreshing to see. You gain a bit of screen real-estate through a clever new layout.
The have a clever new way of using separate processes for separate tabs, so if a tab crashes somehow, the whole browser doesn't. There is even a Chrome process manager, so you can see which site, tab or plug-in is causing problems, and simply kill it. (This can get a bit technical - have a look at the promotional comic. Link at end.)
The layers effect of opening new windows is very clever.
Incognito mode is quite funny to be honest, but with the internet being what it is, I won't be surprised if it gets a fair amount of use.
It has an impressive set of built in spell-checker languages. (Do yourself a favour and set it to REAL English rather than the American flavor)
An interesting feature: users can now resize multi-line textboxes. (Like this one I am typing in now.) While it may be useful here - in most cases it would probably not be. Interesting feature though.
Regarding Google Toolbar - you don't need it anymore. Its basic functionality is now built into the address bar. (Which has a clever auto-complete system that tries to differentiate between whether you want to got to a new address, an existing address from history, or do a Google search.)
Try it out, type some of these search strings straight in your Google Chrome address bar:
current time in Upington
what is the cube root of 74088
325.2 ZAR in USD
define: antidisestablishmentarianism
In my humble opinion, this browser won't surpass Firefox any time soon i.t.o. market share, but it will probably rob enough of it from IE to finally break the back of their majority. Hopefully web developers will then start to build pages to use all the exciting new web technologies, rather than try and retain backwards compatibility with IE.
Do try this - lighting fast download and install. Can get all your favourite, form and password information over from your current browser, without taking over your system if you don't want it to.
If you want to download Google Chrome:
http://www.google.com/chrome
If you want to see the cool, comic style promotion that Google had made by famous cartoon artist:
http://www.google.com/googlebooks/chrome/#
Even if you are set in your browsing ways, try this one for just a few days.
(PS. Google wants you to spell google Google)