Sparrers are more colourful and cheeky: dunnocks skulk in the hedgerows and are very drab. You need to look at behaviour too.
The tits and the finches are the most fun things to have in the garden: they are both great acrobats, but they are quite varied and have lots of different variations, it takes close observation to tell which is which and its easy to get it wrong (as you can see, juveniles and females can be very different, so can time of year).
A lot depends on what food you put out: finches will not bother to come for peanuts, they love seeds like sunflower and niger seeds.
The tits and the finches are the most fun things to have in the garden: they are both great acrobats, but they are quite varied and have lots of different variations, it takes close observation to tell which is which and its easy to get it wrong (as you can see, juveniles and females can be very different, so can time of year).
A lot depends on what food you put out: finches will not bother to come for peanuts, they love seeds like sunflower and niger seeds.