Hi,
What is the problem in using Mozilla? It is the best browser. I also use Mozilla and recommend you the same. As you have said it allows opening multiple tabs in same window. Also you can install some add-ons which make browsing easy and safe. Like HHOT View, it is a browser add-on that lets you quickly view web content without clicking or leaving your current page. It allows quick, safe and click less browsing. You can download this free tool from here.

Hope this will help you out.