Some may disagree, but in my opinion there used to be a time when there was a greater distinction between browsers for the home user. Some would be faster than others, render pages and support web standards better than others. I don't think that's really the case nowadays. I think the difference now is in auxiliary features they provide, such as specific add-ons or a sync service. You'll have an easier time of it if you use one browser and set it up to synchronize your bookmarks and other data with whichever service is native to it.
Xmarks works for some, but for a cross-platform user like me it was just a massive headache.