I now use Maxthon (formerly IE2) most of the time and it has become my browser of preference, but I do use FF, Operan and IE on occasion as well. I run these all on the same machine and have not had any problems with any of the browsers I have to say. Maxthon just seems to give me more of the features that I like and that while some of the others do offer some as well, Maxthon seems to work faster and with the best of all the others in this one browser so naturally I have tended to prefer it.