I found most copy paper to be good, though I prefer the executive bond and JK Cedar. I have had good experience with 80gsm Matrix notepads but not able to find them easily. I got Oddy brand notepads from amazon, they were pretty good but do not have a premium feel.
My most recent discovery is a brand called Fabriano on amazon (but they do sell on flipkart and ebay as well). I ordered their 85gsm ecological notepad, which just did not like FP, it bleeds like crazy. Its so bad that on medium nibs the ink bleeds into the following page.
Just on a whim I ordered their traccia notepad which was 60gsm. Strangely it was the best FP paper I have used(after Rhodia). No bleeding, no showthrough, though being a thin paper very dark inks will ghost. The paper feels premium, to me it feels some kind of coated paper. I wouldn't call it expensive either.