Choosing browsers for different purposes

I am a Mozilla fan and I use mozilla products firefox & thunderbird. Being a developer also I prefer firefox. For using google products chrome/chromium(a open source project) obviously a best choice.

Chrome uses webkit which renders better feel specially the new HTML5 elements and the new CSS3 features. Chrome & Safari both uses Webkit whereas Firefox uses Gecko. Though chrome has moved to a new engine Blink which is a fork from Webkit browser engine. Safari also uses Webkit. Another browser that recently have come to attention is the Maxthon cloud browser which is also on webkit, and seems a modified version of chromium. Following is a detailed information about which browser uses which engines:

• Firefox and other Mozilla browsers use Gecko. 
• Chrome uses its own fork from Webkit named Blink starting from 2013/04/03 (as they have annouced). 
• Safari, Maxthon & Konqueror use Webkit. 
• Internet Explorer uses Trident. 
• Opera 9+ uses Presto

Now if you are browsing some websites regularly which is based on some good graphics on HTML5 extensively then you must use chrome instead of firefox as chrome renders better graphics and heavy javaScript work than firefox. Safari is good but if you are using OS other than Mac its of no use cause there is no option to use it on any linux distro and on windows they have stopped further development.

Chrome/Chromium uses more system memory to give smooth user experience where firefox uses moderate amount of system resources. Alternative to chrome you can try Maxthon which is good webkit based browser, it is stable and can render HTML5 flawlessly.

Other than these popular rich browsers sometime I prefer some light weight browsers like K-Meleon, QtWeb