Hot Chocolate, fronted by the songwriter Errol Brown, didn't have a lot to say musically, but were at their best when their songs were emotional pop narratives, like Emma, It Started with a Kiss, and the anti-racist polemic Brother Louie. The major hits So You Win Again and the eponymous song are just pleasant light funk.
It's worth buying if you enjoy their biggest hits (and they stacked up an impressive number of them), but it's hardly an essential addition to one's collection.
Its worh the money you spend.