boot 43
heavy boot 45
chain boot 48
light plated boot 52
greaves 55
I'd gamble boots, you dont need def on tri-res boots, the lower clvl means lower igg cost.
12,743 gold at clvl 43
10,832 with 15 rvp
8,921 with 30 rvp
I wouldn't gamble hats. I don't see any use with all the RWs/uniques/sets/craft outperforming them. You'd need them to at least be eth, but you can't get eth items from gambling.
Boots arent really profitable either, unless playing classic.
Top options:
circs, amys, claws
rings and gloves are ok but not great
or wait... by 'hats' did you mean circs?
If so, you need clvl 92
I've been doing heavy boot at level 43, I didn't realize the item type mattered lol. Will switch to boot

Yeah, by hats I meant circ/diadems etc. I had a lot of luck gambling for LLD ones on my 42, and want to have a self-found one for a sorc... Eventually. They are expensive to gamble =[