For me, it has to be Leuchtturn1917's 120g/m³. Also like Rhodia, though it's a bit thin for my preference. Happy to hear you guys' suggestions for a slightly heavier (let's say 100g/m³ and above) paper, either loose leaf or in a notebook.
Where I live these better papers are prohibitively expensive to get a hold of and aren't stocked anywhere, so I usually go to the nearest Asian store and look at their notebooks. Even the cheaper ones tend to be better than the average paper from other stores.
Edit: These notebooks aren't going to change your life or blow your mind, but they're a good option in a pinch or if you have no better options