As with all things “best” this is something very subjective and depends on a lot of personal factors. For example, we would all love a high interest rate, but if the one that offers the highest rate has only one branch, and it’s located in a part of the city that you would otherwise hardly ever go to, is the difference in interest really worth the cost of gas or public transport to get there? Probably not, particularly as interest rates are unbelievably low these days. But then again, if that bank has a pretty efficient online banking system, then yes, it might be worth the one-time hassle of opening the account if you can do everything else online.