I have some internet browsers installed in my PC and laptop like Opera, Firefox, Flock, Safari (for Windows) and also Internet Explorer. For my OpenSUSE and Ubuntu, I only have Firefox and Opera. Among those, I only use two browsers regularly. For the other, I only use it for web development purposes.
Even I — think — I have enough memory to run some application at the same time, I love when those browsers do not eat too much memory. So far, I like Opera and Firefox (I use the latest version). Not only that I feel comfortable using them, but also because they have good memory management. If you want to reader some detailed analysis, there are some articles on the internet. Here are some:
The good think is that… I use my favorite internet browsers, and they're also good. Nice.