Colchester's OK at night as long as you avoid Liquid/Envy and the high street. There's some really nice quiet pubs. The Rover's Tye is very family friendly.
The Gilberd is a brilliant school, my DD is there.
And the Country park really is stunning, a hidden gem in the middle of a town, they do activities there for the DC's too, for a minimal donation, like the bat walks, pond dipping, treasure hunts, Geocaching, and loads of other stuff.
I really enjoy living here, and would recommend it to anyone. I lived in Clacton for a whole, never again (where i lived, we called it 'Beirut', and that was in '99 - '00.) ditto Basildon (awful place), Gt. Bentley (boring), Brightlingsea (end of the earth), Brentwood (think TOWIE), Rayleigh (ugh), Chelmsford (Too cliquey).
Though Thorpe Le Soken is nice, if rather rural.
Out of all of them, I like this part of Colchester the best.
I have spent a lot of time living all over Essex...