Fenix
Arcane
Well, you don't have to sell all crap, I'll give you a tip - if you have enough skills in Mechanics, Electronics and Tailoring you can buy blueprint for disassembling many items to scrap bits.I really don't like how after every quest I have to go through the dull routine of selling select crap to multiple merchants and buying ever-so-slightly-better weapon/armor replacements.
From these scrap bits you can assemble repair kits an big repair kits, which weight less and sells for decent credits.
Basically I always scrap melee weapon and especially sledgehammers, and in general all gear that cost less then 2-3 K in unrepaired condition.
Also you can use these RK you made for repairing gear and sell it for more credits.