If you just want a cheap mask with strength...
https://wiki.project1999.com/Platinum_Ruby_Veil
Or
https://wiki.project1999.com/Tribal_War_Mask
Work well. Cost will be between like 200 and 400 plat in green ec tunnel.
If you are doing a self found run, dented brass mask is probably one of the better options, as most of not all str masks with 4 STR or higher are dropped in higher level zones off mobs 40+.