Breath of Fire IV - Cray's Best Equipment

Nunchaku - 145 Attack.  Dropped by Trean in Abandoned Village.

OR

Linked Pole - 133 power.  Manillo Store.  Trade 75 stamp cards for it.

Gideon's Garb - 93 defence, +10 to attack.  Dropped by Battle Suit in Astana, near the end of the game.

OR

Life Armour - Defence 90.  Heals 100hp each turn.  buy from Manillo Store in Astana.  Costs one Whale, one Sturgeon, and three Bullcats.

It took me about half an hour of fighting to get the Gideon's Garb.  I bought one set of Life Armour when I first caught whales and sturgeons; Scias had it first, until I got his King Armour, then Cray, and now Ryu will wear it until I find him something better.

The Mist Armour you can buy in Chedo also has 93 defence, and is slightly lighter than the Gideon's Garb.  The main difference is that the Gideon's Garb also raises your attack, while the Life Armour constantly heals you, making them bother slightly better options.

Treans have a pretty high chance of dropping Nunchakus.  I got one off the third one that I managed to kill; not that it's much easier to kill one out of a group than the whole group.

You can see more information on the Manillo Stores here.