Browsers
Use the one (or several) that work(s) best for you.
Netscape Navigator was the original browser success
Seamonkey is currently carrying the Navigator banner
Microsoft took over with Internet Explorer about 1996
But it is beginning to lose its dominance
Firefox was the next big thing
Lots of people love it, but it, too, has vulnerabilities. There are some display issues as well.
Google is getting into the act now
Some love it: Serious Potential in Google’s Browser, but others suggest caution: Google's Chrome: 7 Reasons for It and 7 Reasons Against It.
Other browsers
Wikipedia has a listing of different browsers, categorized by their layout engine and compares them by a series of different measures. There are other visualizations as well.
Bottom line - use the one that fits your needs
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