The cables dont look bad as they are hidden in a mesh wrap. Just a solid PSU, cant go wrong with a corsair PSU since they have the most advanced testing its very unlikely you get a dud.

Snall form factor PC components can come at a bit of a premium, although with this current Amazon deal, you can get a beefy, reliable PSU ... Corsair SF850L for £130 from Amazon (was £148) 850W ...