I returned to Firefox (Aurora) a couple of months ago, but i am currently starting to inch towards chrome again. While reduced memory usage is good, it doesn't

I returned to Firefox (Aurora) a couple of months ago, but i am currently starting to inch towards chrome again. While reduced memory usage is good, it doesn't help when has major problems handling multiple open tabs with flash player, has problems with javascript-heavy pages, and the firefox profiles STILL degrade in performance over time. I really don't want to remake my FF profiles every 2 weeks just to avoid performance issues.