I would never tell you which is best for you. While I use SeaMonkey I have my reasons and have no issues with Adobe.
I wonder if you have some other machine issue?
What browser is the best to use? I like to play games on FaceBook, but some of them won't work with Internet Explorer, but say to use Chrome of Firefox. However, with either of those, my Flash player crashes every few minutes, which is totally frustrating. And, apparently this has been going on for a LONG time, & lots of people have had problems with it. I've had suggestions from this site, from Google, from Chrome, & even from Adobe of how to fix it, & they MIGHT work for about 5 min. then right back to the same problem. So, I 'm wanting to see if there's a browser that will allow me to play the games I want, without having to stop & sometimes even completely turn off the computer to undo the crash!