Equipment in .Hack//Infection

The best equipment you can get in the game is as follows. I personally like to equip all my team-mates with their best weapons early on. Armour is a lot more difficult, as most items aren't available by data-draining, and so you need to rely on them randomly showing up at a Gott statue, which I've found not to be practical so I usually don't bother.

Head

Light: Thunder Torque. Trade from Tim.
Medium: Lightening Cap.
Heavy: Ceramic Helm (second best is the Stormlord Helm).

Body

Light: Thundercloak. Trade from Micino and Benkei.
Medium: Quakebeast Fur
Heavy: Thunder Armour. Occasionally received from Gott statue.

Hand

Light: Storm Bracer. Trade from Teria, or DD Wood Stock (non-rare).
Medium: Thunder Gloves. Trade from Benoit.
Heavy: Hands of Storm. Trade from Teria.

Foot

Light: Thunder Anklet. Trade from Benoit.
Medium: Ranger's Boots.
Heavy: Electric Guard. From Mantis, or DD Red Scissors (non-rare).

The best weapons are as follows;

Twin Blade (Kite, Natsume): Hyakkidouran (DD Parasite Dragon, only one available), Bom-ba-ye (DD Mu Guardian).

WaveMaster (Elk, Mistral): Dark History (DD Pheonix Queen), Jester's Wand (DD Woodstock).

Heavy Blade (Blackrose, Sanjuro): Shikisokuzeku (DD Goil Menhir), Sakabatou (DD Hell Hound).

Heavy Axe (Piros): Axe Bomber (DD Red Scissors), Great Hill (DD Mantis).

Blademaster (Mia): Phoenix Wing (DD Mystery Rock), Jinsaran (DD Metal Goblin).

Long Arm: Scarlet Autumn (DD Tetra Armour), Million$ Spear (DD Cursed Blades)