I like NordWarUA's armor replacers. I'm also a fan of the various outfits by DeserterX, docteure, dint999, Harry2135 and Team TAL. 4th Unknown has some great armor too. I also use Kirax's project vindictus armor packs, hard to get nowadays. Oh and Artisian Cloaks and Apachii Divine Elegance.
For weapons, I like Dawnguard Arsenal and ArteFakes. Unique Uniques is also good.