I've found that the devotional shirt is great for low lvl hackers, and it mixes very well with the Mother coat and sparkling Fedora.
Also, lets not forget about the Vampire Coat. I totally recommend it for the mid lvl op. But make sure you have other clothes that can make up for the resistances that it lacks.
And while im on a roll, the ghost shirt is pretty nifty if you are mission grinding solo and are looking for an extra "pick me up' while being assaulted by NPCs. But its at an odd level, and is usually skipped or forgotten.