if you just want to text, make calls, take pictures and play music the 5300 will be fine. unless you need the features of the N76 its not worth the extra expense.
these
are 2 very different phones i would go with the n76 but it is much more expensive and high end. The 5300 is a mid end slider while the n76 is a flip it depends on what u like/what u need it for