Which one is better? Int or M.atk?

No change, matk is better than int. Just see what you INT/matk ratio is, normally it's better to chaos stuff (mostly shoes and purple capes) that can't be scrolled for matk but have some to begin with.

Yea, Ive been trying to get m.atk shoes but out of uh... 20shoes Ive makered and potentialed only 2 has become 3lined and both went to 0m.atk either after 1 or 2chaos scrolls >_>'
Should I really use a purple cape or get a lvl 75+cape 3lined scroll for int/luk(since Im wearing ele staff with a 20base) and get 15+%int?