30/10 tri res o eth treks hight psn res? Any can Help me? Thx.

30frw if rare is a must. Is it a must on a nova sorc? You decide.
Is 10 (or 0) FHR enough to hit the BP you want, or the 20 from Treks is necessary?
Do you need the tri-res, or the psn res?

My big selling point on rare boots is PLR. You can also add MF to the sweets list

nova usually uses ES, so tri-res is basically useless. sandstorm offers poison res (useful on ES sorc), so there is that. best option are crafted mana boots, probably 30/10/plr?

fhr is quite useless on pvm es sorcs, so you can take that out of the equation. same goes for every res but poison.

sands is a good option but you'll have to stat some str with them and you lose out on 10 frw

I usually look for rares with 30 frw, 35+ poison res along with any combination of mana/mf/poison length reduction. you might need a poison res sc or two to reach 75 though